science
Grade-11
Easy
Question
Which expression accurately describes the change of momentum of an object?
- F.m
- F.t
The correct answer is: F.t
Related Questions to study
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A rubber ball of mass 0,8 kg is dropped and strikes the floor with an
The initial velocity of 6 m·s−1. It bounces back with a final velocity of 4 m·s−1. Calculate the change in the momentum of the rubber ball caused by the floor.
A rubber ball of mass 0,8 kg is dropped and strikes the floor with an
The initial velocity of 6 m·s−1. It bounces back with a final velocity of 4 m·s−1. Calculate the change in the momentum of the rubber ball caused by the floor.
scienceGrade-11
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A soccer ball of mass 420 g is kicked at 20 m·s−1 towards the goal post.
Calculate the momentum of the ball.
A soccer ball of mass 420 g is kicked at 20 m·s−1 towards the goal post.
Calculate the momentum of the ball.
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A cart with a mass of 2kg traveling at 6 m s–1 collides with another cart of mass 1kg
traveling in the same direction at 2 m s–1. It bounces off, as shown in Figure4. After impact, the 2kg cart travels at 3 m s–1 in the same direction. Calculate the velocity of the 1kg cart after the collision.
A cart with a mass of 2kg traveling at 6 m s–1 collides with another cart of mass 1kg
traveling in the same direction at 2 m s–1. It bounces off, as shown in Figure4. After impact, the 2kg cart travels at 3 m s–1 in the same direction. Calculate the velocity of the 1kg cart after the collision.
scienceGrade-11
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A moving company worker places a 252-kg trunk on a piece of carpeting
and slides it across the floor at a constant velocity by exerting a horizontal force of 425 N on the trunk. What horizontal force must the mover apply to move the combination of the two trunks at constant velocity?
A moving company worker places a 252-kg trunk on a piece of carpeting
and slides it across the floor at a constant velocity by exerting a horizontal force of 425 N on the trunk. What horizontal force must the mover apply to move the combination of the two trunks at constant velocity?
scienceGrade-11
science
A moving company worker places a 252-kg trunk on a piece of carpeting and slides it across the floor at a constant velocity by exerting a horizontal force of 425 N on the trunk. What is the coefficient of kinetic friction?
A moving company worker places a 252-kg trunk on a piece of carpeting and slides it across the floor at a constant velocity by exerting a horizontal force of 425 N on the trunk. What is the coefficient of kinetic friction?
scienceGrade-11
science
If two balls of the same masses are dropped on sand, the depths of penetration is the same if
If two balls of the same masses are dropped on sand, the depths of penetration is the same if
scienceGrade-11
science
The horse pulling the wagon is able to move forward because of
The horse pulling the wagon is able to move forward because of
scienceGrade-11
science
In the above question calculate the normal force present in this situation
In the above question calculate the normal force present in this situation
scienceGrade-11
science
A 50 kg crate is placed on a slope that makes an angle of 30◦ with the
horizontal. The box does not slide down the slope. Calculate the magnitude and
The direction of the frictional force
A 50 kg crate is placed on a slope that makes an angle of 30◦ with the
horizontal. The box does not slide down the slope. Calculate the magnitude and
The direction of the frictional force
scienceGrade-11
science
Which of the following statements are true about collisions?
Which of the following statements are true about collisions?
scienceGrade-11
science
Which statement is correct
Which statement is correct
scienceGrade-11
science
Momentum is a ________ quantity.
Momentum is a ________ quantity.
scienceGrade-11
science
Two billiard balls roll towards each other. They each have a mass of
0,3 kg. Ball 1 is moving at v1 = 1m · s−1 to the right, while ball 2 is moving at
v2 = 0,8m · s−1 to the left. Calculate the total momentum of the system.
Two billiard balls roll towards each other. They each have a mass of
0,3 kg. Ball 1 is moving at v1 = 1m · s−1 to the right, while ball 2 is moving at
v2 = 0,8m · s−1 to the left. Calculate the total momentum of the system.
scienceGrade-11
science
A cricket ball of mass 160 g is bowled at 40 m·s−1 towards a batsman.
Calculate the momentum of the cricket ball.
A cricket ball of mass 160 g is bowled at 40 m·s−1 towards a batsman.
Calculate the momentum of the cricket ball.
scienceGrade-11
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A horizontal force of 5.0 N is applied to a 1.0kg wooden box resting on a laminate benchtop. If the friction is 2.94 N, calculate the motion of the box.
A horizontal force of 5.0 N is applied to a 1.0kg wooden box resting on a laminate benchtop. If the friction is 2.94 N, calculate the motion of the box.
scienceGrade-11
