270189
A body of mass moving on a horizontal surface with an initial velocity of , comes to rest after 2 second. If one wants to keep this body moving on the same surface with a velocity of , the force required is
1 zero
2
3
4
Explanation:
Laws of Motion
270190
Ten coinsare placed on top of each other on a horizontal table. If the mass of each coin is and acceleration due to gravity is , what is the magnitude and direction of the force on the coin (counting from the bottom) due to all the coins above it?
1 downwards
2 upwards
3 downwards
4 upwards
Explanation:
Force on the seventh coin = weight of the three coins above it.
Laws of Motion
270191
A ball of mass 'm' moves normal to a wall with a velocity ' ' and rebounds with the same speed. The change in momentum of the ball during the rebounding is
1 2 mu towards the wall
2 away from the wall
3 zero
4 mu away from the wall
Explanation:
Laws of Motion
270192
Bullets of mass each hit a plate at the rate of 200 bullets per second with a velocity of . The average force acting on the plate in newton is
1 120
2 180
3 300
4 480
Explanation:
Laws of Motion
270193
A vehicle of mass is moving with a velocity of .To stop it in sec the required force in opposite direction is
270189
A body of mass moving on a horizontal surface with an initial velocity of , comes to rest after 2 second. If one wants to keep this body moving on the same surface with a velocity of , the force required is
1 zero
2
3
4
Explanation:
Laws of Motion
270190
Ten coinsare placed on top of each other on a horizontal table. If the mass of each coin is and acceleration due to gravity is , what is the magnitude and direction of the force on the coin (counting from the bottom) due to all the coins above it?
1 downwards
2 upwards
3 downwards
4 upwards
Explanation:
Force on the seventh coin = weight of the three coins above it.
Laws of Motion
270191
A ball of mass 'm' moves normal to a wall with a velocity ' ' and rebounds with the same speed. The change in momentum of the ball during the rebounding is
1 2 mu towards the wall
2 away from the wall
3 zero
4 mu away from the wall
Explanation:
Laws of Motion
270192
Bullets of mass each hit a plate at the rate of 200 bullets per second with a velocity of . The average force acting on the plate in newton is
1 120
2 180
3 300
4 480
Explanation:
Laws of Motion
270193
A vehicle of mass is moving with a velocity of .To stop it in sec the required force in opposite direction is
270189
A body of mass moving on a horizontal surface with an initial velocity of , comes to rest after 2 second. If one wants to keep this body moving on the same surface with a velocity of , the force required is
1 zero
2
3
4
Explanation:
Laws of Motion
270190
Ten coinsare placed on top of each other on a horizontal table. If the mass of each coin is and acceleration due to gravity is , what is the magnitude and direction of the force on the coin (counting from the bottom) due to all the coins above it?
1 downwards
2 upwards
3 downwards
4 upwards
Explanation:
Force on the seventh coin = weight of the three coins above it.
Laws of Motion
270191
A ball of mass 'm' moves normal to a wall with a velocity ' ' and rebounds with the same speed. The change in momentum of the ball during the rebounding is
1 2 mu towards the wall
2 away from the wall
3 zero
4 mu away from the wall
Explanation:
Laws of Motion
270192
Bullets of mass each hit a plate at the rate of 200 bullets per second with a velocity of . The average force acting on the plate in newton is
1 120
2 180
3 300
4 480
Explanation:
Laws of Motion
270193
A vehicle of mass is moving with a velocity of .To stop it in sec the required force in opposite direction is
270189
A body of mass moving on a horizontal surface with an initial velocity of , comes to rest after 2 second. If one wants to keep this body moving on the same surface with a velocity of , the force required is
1 zero
2
3
4
Explanation:
Laws of Motion
270190
Ten coinsare placed on top of each other on a horizontal table. If the mass of each coin is and acceleration due to gravity is , what is the magnitude and direction of the force on the coin (counting from the bottom) due to all the coins above it?
1 downwards
2 upwards
3 downwards
4 upwards
Explanation:
Force on the seventh coin = weight of the three coins above it.
Laws of Motion
270191
A ball of mass 'm' moves normal to a wall with a velocity ' ' and rebounds with the same speed. The change in momentum of the ball during the rebounding is
1 2 mu towards the wall
2 away from the wall
3 zero
4 mu away from the wall
Explanation:
Laws of Motion
270192
Bullets of mass each hit a plate at the rate of 200 bullets per second with a velocity of . The average force acting on the plate in newton is
1 120
2 180
3 300
4 480
Explanation:
Laws of Motion
270193
A vehicle of mass is moving with a velocity of .To stop it in sec the required force in opposite direction is
270189
A body of mass moving on a horizontal surface with an initial velocity of , comes to rest after 2 second. If one wants to keep this body moving on the same surface with a velocity of , the force required is
1 zero
2
3
4
Explanation:
Laws of Motion
270190
Ten coinsare placed on top of each other on a horizontal table. If the mass of each coin is and acceleration due to gravity is , what is the magnitude and direction of the force on the coin (counting from the bottom) due to all the coins above it?
1 downwards
2 upwards
3 downwards
4 upwards
Explanation:
Force on the seventh coin = weight of the three coins above it.
Laws of Motion
270191
A ball of mass 'm' moves normal to a wall with a velocity ' ' and rebounds with the same speed. The change in momentum of the ball during the rebounding is
1 2 mu towards the wall
2 away from the wall
3 zero
4 mu away from the wall
Explanation:
Laws of Motion
270192
Bullets of mass each hit a plate at the rate of 200 bullets per second with a velocity of . The average force acting on the plate in newton is
1 120
2 180
3 300
4 480
Explanation:
Laws of Motion
270193
A vehicle of mass is moving with a velocity of .To stop it in sec the required force in opposite direction is