Momentum/impulse

1. A projectile is any object that once projected or dropped continues in motion by its own inertia and is   influenced only by the downward force of gravity that is why they follow a curvilinear path known as _____

• A. Distance  

• B. Height

• C. Range

• D. Trajectory

The only force acting on the object in projectile motion is ______________.

A

• acceleration

• Air resistance

• friction

• gravity

3.The maximum point a projectile reaches in the air is known as_____

• Height

• Time

• distance

• Trajectory

Projectile motion has different parts. One of the parts of projectile motion that determines how far an object land on the ground is _____

• Launch angle

• Trajectory

• Height

• Distance

Which of the following is not an example of projectile motion

• Spiked volleyball

• Kicked ball

• batted baseball

• Rolling ball on a ground

In a free fall motion any object thrown upward will go downward What force acts in the down  direction of the object?

• Friction

• Gravity

• Tension

• Inertia

Which of the following best describes the relationship between impulse and momentum in a collision?

• A. Impulse is the change in momentum during a collision.

• B. Momentum is the change in impulse during a collision.

• C. Impulse and momentum are unrelated in a collision.

• D. Impulse is the product of momentum and time during a collision.

In a collision between two objects, what happens to the total momentum of the system if no external forces    are present?

• it decreases

• it increases

• it remains constant

• it becomes zero

Why is impulse important in understanding the effects of a collision?

•  It determines the final velocities of the objects.

•  It describes the force applied during the collision.

• It relates the change in momentum to the time of collision.

• It measures the kinetic energy lost during the collision

Which of the following statements best describes the law of conservation of momentum?

• A. The total momentum of a system before a collision is greater than the total momentum after the collision.

• B. The total momentum of a system before a collision is less than the total momentum after the collision.

  n.

• C. The total momentum of a system before a collision is equal to the total momentum after the collision.

• D. The total momentum of a system before a collision is unrelated to the total momentum after the collision.