Two person manage to push a motor car of mass 1200kg at a uniform velocity along a level road. The same motor car can be pushed by three person to produce an acceleration of 0.2m/s2. With what force does each person push the motor car? (Assume that all the persons push the motor car with the same muscular effort).
80N
40N
70N
100N
A force of 16N is distributed uniformly on one surface of cole of edge 8cm. Calculate the pressure on this surface ?
2500 pa
3500 pa
4500 pa
5500 pa
A force of 10 N is acting on an object of mass 10 kg. What is the acceleration produced in it?
1 m/s2
1 m/s
100 m/s2
100 m/s
A bullet of 10 g strikes a sandbag at a speed of 103 m/s and gets embedded after travelling 5 cm. Calculate the resistive force exerted by the sand on the bullet ?
105 N
108 N
107 N
106 N
A gun of mass 5kg fires a 50g bullet with velocity 200 m/s.Calculate the recoil velocity of gun ?
2 m/s
20 m/s
0.2 m/s
Zero
Which of the following are vector quantities?
Force
velocity
Momentum
All the above
An athlete can take a longer jump if he comes running from a distance as compared to that when he jumps suddenly. Identify the type of inertia.
Inertia of rest
Inertia of motion
Inertia of direction
Inertia of position
What is the other name for Newton's first law of motion ?
Law of force
Law of inertia
Law of momentum
Law of conservation of energy
Based on whose ideas did Newton present the laws of motion?
Galileo Galilei
Edison
Cavendish
Graham Bell
A cricket ball weighing 10 g and moving with a speed of 20ms-1 strikes a bat and remains in contact with it for 0.1s. Calculate the average force exerted by the ball on the bat ?
100 N
10 N
40 N
1 N
