Momentum and Impulse

When Priya throws a baseball, the momentum of the baseball depends upon the baseball's ___________&_____________.

• size and shape

• mass and speed

• mass and veloctiy

• mass and energy

During a physics experiment, Mia pushes a cart with varying forces and measures the change in velocity over time. Which one of the following units represents the standard metric units of momentum she should use for her calculations?

• Newtons * meter / second

• Kilograms * meter / second²

• meter / second

• Kilograms * meter / second

During a science project, Harper is studying the impact force of a ball hitting the ground. Which one of the following units represents the standard metric units of impulse that Harper should use to measure the impact force?

• Kilograms * meter / second²

• Newton * meter

• meter / second²

• Newton * second

When Priya and Aiden play catch, throwing a ball back and forth, the law of conservation of momentum states that, 

• p before is less than p after

• p before is the same as p after

• p before is more than p after

When the speed of a car driven by Noah is doubled, its momentum

• remains unchanged in accord with the conservation of momentum.

• doubles

• quadruples

• decreases

When Hannah jumps onto a foam pit from a height, compared to landing on a hard surface, the foam pit tends to

• increase impact force

• increase force

• increase collision time

• increase change in momentum

When Michael drops an egg onto a pillow from a height, the egg remains unbroken. The pillow increases the _____ and decreases the _____ during the impact.

• impulse, time

• impulse, force

• force, time

• time, force

When Grace accidentally bumps into a table with padded edges, she is less likely to get hurt compared to a table with hard edges because the impact with the padded edge results in...

• a) Increased time of impact

• b) Decreased impulse

• c) Decreased impact force

• d) a and b

• e) a and c

When Scarlett and Jackson collide during a game of dodgeball, both students experience the same ____.

• force of impact

• time of impact

• change in momentum

• all of the above

Most modern vehicles have padded dashboards. This reduces collision injuries by...

• reducing the driver's change in momentum
• increasing the driver's change in momentum
• increasing the force of impact
• increasing the time of impact