Choose the correct options for the following questions.
Ball thrown freely from a tower reaches ground in 4 s. The height of tower is about
Difficulty: Easy
A:
20 m
B:
40 m
C:
80 m
D:
160 m
A body of mass m = 3.513 kg is moving along the x axis with a speed of 5.00 $\rm{ms^{-1}}$. The magnitude
Difficulty: Easy
A:
13.56 $\rm{kg\,ms^{-1}}$
B:
14.57 $\rm{kg\,ms^{-1}}$
C:
17.6 $\rm{kg\,ms^{-1}}$
D:
18.565 $\rm{kg\,ms^{-1}}$
A body is dropped from a height of 175 meters. How much time will it take to reach the ground?
Difficulty: Easy
A:
2 seconds
B:
3.5 seconds
C:
4.68 seconds
D:
5.97 seconds
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