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Which sentence is correct?
Anonymous Quiz
17%
She don't like apples.
17%
She does't likes apples.
62%
She doesn't like apples.
4%
She don't likes apples.
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Identify the error in the following sentence: "Neither of the answers are correct."
A) Neither
B) Of
C) Answers
D) Are
A) Neither
B) Of
C) Answers
D) Are
π2
1. A car accelerates uniformly from rest to a speed of 20 m/s in 5 seconds. What is the magnitude of its acceleration?
(a) 2 m/sΒ²
(b) 4 m/sΒ²
(c) 5 m/sΒ²
(d) 10 m/sΒ²
2. A ball is thrown vertically upwards. At the highest point of its trajectory, what is its acceleration?
(a) 0 m/sΒ²
(b) 9.8 m/sΒ² downwards
(c) 9.8 m/sΒ² upwards
(d) Depends on the initial velocity
3. An object is moving with a constant velocity. What is its acceleration?
(a) Constant and non-zero
(b) Increasing
(c) Decreasing
(d) Zero
4. Which of the following situations always indicates that an object is accelerating?
(a) Its speed is increasing.
(b) Its direction is changing.
(c) Its velocity is changing.
(d) It is moving.
5. A cyclist travels around a circular track at a constant speed. Which of the following is true about the cyclist's acceleration?
(a) The acceleration is zero.
(b) The acceleration is constant in magnitude and direction.
(c) The acceleration is constant in magnitude but changes direction.
(d) The acceleration is changing in both magnitude and direction.
6. A rock is dropped from a tall building. Ignoring air resistance, its acceleration is:
(a) Increasing as it falls.
(b) Decreasing as it falls.
(c) Constant and equal to 9.8 m/sΒ².
(d) Zero.
7. A car is moving at a constant speed and then brakes suddenly. Which of the following describes the acceleration of the car?
(a) Positive
(b) Negative
(c) Zero
(d) It depends on the initial speed
8. The slope of a velocity-time graph represents:
(a) Displacement
(b) Velocity
(c) Acceleration
(d) Distance
9. A particle starts from rest and accelerates uniformly at 3 m/sΒ² for 4 seconds. How far does it travel during this time?
(a) 6 meters
(b) 12 meters
(c) 24 meters
(d) 36 meters
10. A rocket accelerates from rest at a rate of 5 m/sΒ². After how many seconds will its velocity be 50 m/s?
(a) 5 seconds
(b) 10 seconds
(c) 25 seconds
(d) 100 seconds
Answer Key (Don't peek until you've tried them!):
1. (b) 4 m/sΒ² (a = Ξv / Ξt = (20-0)/5)
2. (b) 9.8 m/sΒ² downwards (Gravity still acts)
3. (d) Zero (Constant velocity means no change in velocity)
4. (c) Its velocity is changing. (Acceleration is defined as a change in velocity, which includes both speed and direction.)
5. (c) The acceleration is constant in magnitude but changes direction. (This is centripetal acceleration.)
6. (c) Constant and equal to 9.8 m/sΒ².
7. (b) Negative (The car is slowing down, so the acceleration is in the opposite direction of the velocity.)
8. (c) Acceleration
9. (c) 24 meters (d = vβt + 1/2 atΒ² = 0 + 1/2 Γ 3 Γ 4Β²)
10. (b) 10 seconds (v = vβ + at => 50 = 0 + 5t)
(a) 2 m/sΒ²
(b) 4 m/sΒ²
(c) 5 m/sΒ²
(d) 10 m/sΒ²
2. A ball is thrown vertically upwards. At the highest point of its trajectory, what is its acceleration?
(a) 0 m/sΒ²
(b) 9.8 m/sΒ² downwards
(c) 9.8 m/sΒ² upwards
(d) Depends on the initial velocity
3. An object is moving with a constant velocity. What is its acceleration?
(a) Constant and non-zero
(b) Increasing
(c) Decreasing
(d) Zero
4. Which of the following situations always indicates that an object is accelerating?
(a) Its speed is increasing.
(b) Its direction is changing.
(c) Its velocity is changing.
(d) It is moving.
5. A cyclist travels around a circular track at a constant speed. Which of the following is true about the cyclist's acceleration?
(a) The acceleration is zero.
(b) The acceleration is constant in magnitude and direction.
(c) The acceleration is constant in magnitude but changes direction.
(d) The acceleration is changing in both magnitude and direction.
6. A rock is dropped from a tall building. Ignoring air resistance, its acceleration is:
(a) Increasing as it falls.
(b) Decreasing as it falls.
(c) Constant and equal to 9.8 m/sΒ².
(d) Zero.
7. A car is moving at a constant speed and then brakes suddenly. Which of the following describes the acceleration of the car?
(a) Positive
(b) Negative
(c) Zero
(d) It depends on the initial speed
8. The slope of a velocity-time graph represents:
(a) Displacement
(b) Velocity
(c) Acceleration
(d) Distance
9. A particle starts from rest and accelerates uniformly at 3 m/sΒ² for 4 seconds. How far does it travel during this time?
(a) 6 meters
(b) 12 meters
(c) 24 meters
(d) 36 meters
10. A rocket accelerates from rest at a rate of 5 m/sΒ². After how many seconds will its velocity be 50 m/s?
(a) 5 seconds
(b) 10 seconds
(c) 25 seconds
(d) 100 seconds
Answer Key (Don't peek until you've tried them!):
1. (b) 4 m/sΒ² (a = Ξv / Ξt = (20-0)/5)
2. (b) 9.8 m/sΒ² downwards (Gravity still acts)
3. (d) Zero (Constant velocity means no change in velocity)
4. (c) Its velocity is changing. (Acceleration is defined as a change in velocity, which includes both speed and direction.)
5. (c) The acceleration is constant in magnitude but changes direction. (This is centripetal acceleration.)
6. (c) Constant and equal to 9.8 m/sΒ².
7. (b) Negative (The car is slowing down, so the acceleration is in the opposite direction of the velocity.)
8. (c) Acceleration
9. (c) 24 meters (d = vβt + 1/2 atΒ² = 0 + 1/2 Γ 3 Γ 4Β²)
10. (b) 10 seconds (v = vβ + at => 50 = 0 + 5t)
β€5π₯1
Forwarded from Simple English
π π For vs. Since: The Fun Difference!
Imagine you're talking about timeβboth words help you talk about how long something has been happening, but they do it in different ways:
ββββββββ
π π "For" β The Duration Party!
β¦ Think of "for" as the duration of a party.
β¦ It tells us how long something lasts.
β¦ Examples:
β¦ I have been learning English for 2 years.
β¦ She stayed at the cafe for an hour.
β¦ They played football for three days.
π β³ "Since" β The Start Line!
β¦ "Since" is like marking the start of a journey.
β¦ It shows when something began, and usually, it keeps going.
β¦ Examples:
β¦ I have been learning English since 2022.
β¦ She has lived here since last year.
β¦ They have been friends since childhood.
ββββββββ
π πΉοΈ Interactive Game Time!
Imagine you have a pet puppy. If you've had your puppy for two months, it means the duration you've had the puppy is 2 months. But if you've had your puppy since April, it means your puppy arrived at the start of April and you're still together!
Imagine you're talking about timeβboth words help you talk about how long something has been happening, but they do it in different ways:
ββββββββ
π π "For" β The Duration Party!
β¦ Think of "for" as the duration of a party.
β¦ It tells us how long something lasts.
β¦ Examples:
β¦ I have been learning English for 2 years.
β¦ She stayed at the cafe for an hour.
β¦ They played football for three days.
π β³ "Since" β The Start Line!
β¦ "Since" is like marking the start of a journey.
β¦ It shows when something began, and usually, it keeps going.
β¦ Examples:
β¦ I have been learning English since 2022.
β¦ She has lived here since last year.
β¦ They have been friends since childhood.
ββββββββ
π πΉοΈ Interactive Game Time!
Imagine you have a pet puppy. If you've had your puppy for two months, it means the duration you've had the puppy is 2 months. But if you've had your puppy since April, it means your puppy arrived at the start of April and you're still together!
β€2
Yeshlmat tiake 2 seat lay ynorenal bekdmya @elevated_english join ybelu
β€2