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Newton's 3rd law of motion is for bodies that are
NET
NUST Entry Test
Physics
Motion and Force
A balloon is going upwards with a velocity 12 $\rm{m/s}$. It releases a packet when it is at a height of 65 $\rm{m}$ from the ground. How much time the packet will take to reach the ground if $\rm{g=10 \,\, m/s^{2}}$?
NET
NUST Entry Test
Physics
Motion and Force
If a gunman standing in a stationary boat in water fires the gun in a horizontal direction the boat will:
NET
NUST Entry Test
Physics
Motion and Force
When a moving car stops quickly, the driver moves _______ the wind shield
NET
NUST Entry Test
Physics
Motion and Force
Action and reaction of two bodies upon each other are:
NET
NUST Entry Test
Physics
Motion and Force
To produce same acceleration in the bodies of masses 5 kg and 10 kg, the force applied on the second body should be:
NET
NUST Entry Test
Physics
Motion and Force
Newton's first law is also called:
NET
NUST Entry Test
Physics
Motion and Force
If force of friction is negligible, then acceleration of two freely falling objects of different masses is:
NET
NUST Entry Test
Physics
Motion and Force
Acceleration in a body is always produced in the direction of:
NET
NUST Entry Test
Physics
Motion and Force
A train starts from rest with a uniform acceleration of 10 cm $sec^{-2}$. Its velocity after one minute is:
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NUST Entry Test
Physics
Motion and Force
A body starting from rest covers a distance of 0.45 km and acquires a velocity of 300 km/hr. Its acceleration will be:
NET
NUST Entry Test
Physics
Motion and Force
A train covers 90 km in half an hour. The time taken by it to travel 15 km will be:
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NUST Entry Test
Physics
Motion and Force
Acceleration of 1.5 m $sec^{-2}$ expressed in km $hr^{-2}$ is:
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NUST Entry Test
Physics
Motion and Force
Motion of a body along Y-axis is:
NET
NUST Entry Test
Physics
Motion and Force
A car starts from rest with a uniform acceleration of 20 cm $sec^{-2}$. The distance covered by it in 10 seconds is:
NET
NUST Entry Test
Physics
Motion and Force
If the acceleration of a body is not uniform, then velocity-time graph will be:
NET
NUST Entry Test
Physics
Motion and Force
If the acceleration of a body is negative, then slope of the velocity-time graph will be:
NET
NUST Entry Test
Physics
Motion and Force
When $\triangle t \rightarrow 0$, the acceleration of a moving body is called:
NET
NUST Entry Test
Physics
Motion and Force
A body falling freely has:
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NUST Entry Test
Physics
Motion and Force
A ball is thrown up vertically from the ground level. It completes its journey when it strikes the ground back in 4 seconds. It has travelled more distance in:
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NUST Entry Test
Physics
Motion and Force
A ball is thrown up vertically above from the ground which then comes down. The time-displacement graph is:
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NUST Entry Test
Physics
Motion and Force
The average acceleration of a body becomes its instantaneous acceleration when:
NET
NUST Entry Test
Physics
Motion and Force
Distance covered by a freely falling body in the first second of its motion will be:
NET
NUST Entry Test
Physics
Motion and Force
If slope of velocity-time graph is a straight line such that $\tan \theta=1$ at each point, the graph represents:
NET
NUST Entry Test
Physics
Motion and Force
A body is thrown vertically upward with initial velocity of 9.8 $m sec^{-1}$. It will reach the height of:
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NUST Entry Test
Physics
Motion and Force
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