NEWTON'S LAWS OF MOTION
Laws of Motion

270190 Ten coinsare placed on top of each other on a horizontal table. If the mass of each coin is 10 g and acceleration due to gravity is 10 ms2, what is the magnitude and direction of the force on the 7th  coin (counting from the bottom) due to all the coins above it?

1 0.3 N downwards
2 0.3 N upwards
3 0.7 N downwards
4 0.7 N upwards
Laws of Motion

270191 A ball of mass 'm' moves normal to a wall with a velocity 'u ' and rebounds with the same speed. The change in momentum of the ball during the rebounding is

1 2 mu towards the wall
2 2mu away from the wall
3 zero
4 mu away from the wall
Laws of Motion

270192 Bullets of0.03 kg mass each hit a plate at the rate of 200 bullets per second with a velocity of 30 m/s. The average force acting on the plate in newton is

1 120
2 180
3 300
4 480
Laws of Motion

270193 A vehicle of mass10 kg is moving with a velocity of 5 ms1.To stop it in 1/10 sec the required force in opposite direction is

1 5000 N
2 500 N
3 50 N
4 1000 N IMPULSE
Laws of Motion

270189 A body of mass2kg moving on a horizontal surface with an initial velocity of 4 ms1, comes to rest after 2 second. If one wants to keep this body moving on the same surface with a velocity of 4 ms1, the force required is

1 zero
2 2 N
3 4 N
4 8 N
Laws of Motion

270190 Ten coinsare placed on top of each other on a horizontal table. If the mass of each coin is 10 g and acceleration due to gravity is 10 ms2, what is the magnitude and direction of the force on the 7th  coin (counting from the bottom) due to all the coins above it?

1 0.3 N downwards
2 0.3 N upwards
3 0.7 N downwards
4 0.7 N upwards
Laws of Motion

270191 A ball of mass 'm' moves normal to a wall with a velocity 'u ' and rebounds with the same speed. The change in momentum of the ball during the rebounding is

1 2 mu towards the wall
2 2mu away from the wall
3 zero
4 mu away from the wall
Laws of Motion

270192 Bullets of0.03 kg mass each hit a plate at the rate of 200 bullets per second with a velocity of 30 m/s. The average force acting on the plate in newton is

1 120
2 180
3 300
4 480
Laws of Motion

270193 A vehicle of mass10 kg is moving with a velocity of 5 ms1.To stop it in 1/10 sec the required force in opposite direction is

1 5000 N
2 500 N
3 50 N
4 1000 N IMPULSE
Laws of Motion

270189 A body of mass2kg moving on a horizontal surface with an initial velocity of 4 ms1, comes to rest after 2 second. If one wants to keep this body moving on the same surface with a velocity of 4 ms1, the force required is

1 zero
2 2 N
3 4 N
4 8 N
Laws of Motion

270190 Ten coinsare placed on top of each other on a horizontal table. If the mass of each coin is 10 g and acceleration due to gravity is 10 ms2, what is the magnitude and direction of the force on the 7th  coin (counting from the bottom) due to all the coins above it?

1 0.3 N downwards
2 0.3 N upwards
3 0.7 N downwards
4 0.7 N upwards
Laws of Motion

270191 A ball of mass 'm' moves normal to a wall with a velocity 'u ' and rebounds with the same speed. The change in momentum of the ball during the rebounding is

1 2 mu towards the wall
2 2mu away from the wall
3 zero
4 mu away from the wall
Laws of Motion

270192 Bullets of0.03 kg mass each hit a plate at the rate of 200 bullets per second with a velocity of 30 m/s. The average force acting on the plate in newton is

1 120
2 180
3 300
4 480
Laws of Motion

270193 A vehicle of mass10 kg is moving with a velocity of 5 ms1.To stop it in 1/10 sec the required force in opposite direction is

1 5000 N
2 500 N
3 50 N
4 1000 N IMPULSE
Laws of Motion

270189 A body of mass2kg moving on a horizontal surface with an initial velocity of 4 ms1, comes to rest after 2 second. If one wants to keep this body moving on the same surface with a velocity of 4 ms1, the force required is

1 zero
2 2 N
3 4 N
4 8 N
Laws of Motion

270190 Ten coinsare placed on top of each other on a horizontal table. If the mass of each coin is 10 g and acceleration due to gravity is 10 ms2, what is the magnitude and direction of the force on the 7th  coin (counting from the bottom) due to all the coins above it?

1 0.3 N downwards
2 0.3 N upwards
3 0.7 N downwards
4 0.7 N upwards
Laws of Motion

270191 A ball of mass 'm' moves normal to a wall with a velocity 'u ' and rebounds with the same speed. The change in momentum of the ball during the rebounding is

1 2 mu towards the wall
2 2mu away from the wall
3 zero
4 mu away from the wall
Laws of Motion

270192 Bullets of0.03 kg mass each hit a plate at the rate of 200 bullets per second with a velocity of 30 m/s. The average force acting on the plate in newton is

1 120
2 180
3 300
4 480
Laws of Motion

270193 A vehicle of mass10 kg is moving with a velocity of 5 ms1.To stop it in 1/10 sec the required force in opposite direction is

1 5000 N
2 500 N
3 50 N
4 1000 N IMPULSE
Laws of Motion

270189 A body of mass2kg moving on a horizontal surface with an initial velocity of 4 ms1, comes to rest after 2 second. If one wants to keep this body moving on the same surface with a velocity of 4 ms1, the force required is

1 zero
2 2 N
3 4 N
4 8 N
Laws of Motion

270190 Ten coinsare placed on top of each other on a horizontal table. If the mass of each coin is 10 g and acceleration due to gravity is 10 ms2, what is the magnitude and direction of the force on the 7th  coin (counting from the bottom) due to all the coins above it?

1 0.3 N downwards
2 0.3 N upwards
3 0.7 N downwards
4 0.7 N upwards
Laws of Motion

270191 A ball of mass 'm' moves normal to a wall with a velocity 'u ' and rebounds with the same speed. The change in momentum of the ball during the rebounding is

1 2 mu towards the wall
2 2mu away from the wall
3 zero
4 mu away from the wall
Laws of Motion

270192 Bullets of0.03 kg mass each hit a plate at the rate of 200 bullets per second with a velocity of 30 m/s. The average force acting on the plate in newton is

1 120
2 180
3 300
4 480
Laws of Motion

270193 A vehicle of mass10 kg is moving with a velocity of 5 ms1.To stop it in 1/10 sec the required force in opposite direction is

1 5000 N
2 500 N
3 50 N
4 1000 N IMPULSE