SuperCoaching AE/JE by Testbook
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A ball is thrown upwards. At its highest point, what is its velocity?
Anonymous Quiz
11%
Constant
19%
Maximum
18%
Minimum, but non-zero
51%
Zero
👍1
A ball is thrown upwards. At its highest point, what is its acceleration?
Anonymous Quiz
47%
9.8 m/s² downwards
32%
0 m/s²
16%
9.8 m/s² upwards
4%
Dependent on initial velocity.
1
What is the derivative of f(x) = x²sin(x)?
Anonymous Quiz
20%
2xcos(x)
73%
2xsin(x) + x²cos(x)
6%
x²cos(x)
1%
2cos(x) - x²sin(x)
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1
A car accelerates from rest to 20 m/s in 5s. What's the distance covered, assuming constant acceleration?
Anonymous Quiz
5%
25m
29%
50m
63%
100m
3%
200m
What is the area of a circle with radius 5?
Anonymous Quiz
11%
10π
18%
25
70%
25π
1%
10
Which element has the lowest electronegativity?
Anonymous Quiz
34%
Fluorine
26%
Cesium
24%
Oxygen
16%
Chlorine
A pendulum's period doubles. By what factor did its length increase?
Anonymous Quiz
22%
1/4
52%
1/2
16%
2
9%
4
1
A ball dropped from a height 'h' rebounds to h/2. The coefficient of restitution is:
Anonymous Quiz
23%
1/2
29%
√2
42%
1/√2
6%
1/4