Physics Past Questions and Answers

What is the acceleration between two points on a velocity time graph which has coordinates <br/>(10s, 15 ms<sup style='font-size: smaller;'>-1</sup>)<br/>and (20 s, 35 ms<sup style='font-size: smaller;'>-1</sup>)?

A bullet fired vertically from upward from a gun held 2.0 m above the ground reaches its maximum height in 4.0s. calculate its initial velocity.<br/>[g = 10ms<sup style='font-size: smaller;'>-2</sup>]

I. The motion of the tyres of a moving car.<br/>II. The motion of a loaded test tube oscillated<br/>vertically.<br/>III. The beating of the heart.<br/>IV. A stone tied to a string and whirled round.<br/>V. The motion of the pistons in a gasoline engine.<br/>Which of the motions above is simple harmonic?

If a cage containing a truck of coal weighing 750 kg is raised to a height of 90 m in a minute, what is the total power expended? <br/>[g = 10 ms<sup style='font-size: smaller;'>2</sup>]

An object of mass 80 kg is pulled on a horizontal rough ground by a force of 500 N. Find the coefficient of static friction.<br/>[g = 10 ms<sup style='font-size: smaller;'>-2</sup>]