Q1 Alexes gives a cart filled with groceries and her sister a good push and the cart moves away from her with a speed of 10 m/s on a smooth floor (assume no air resistance and no friction). Then Krystina (20 pounds) jumps out of the cart, removing 1/4th of the total mass from the cart. What happens to the speed of the cart?

Speed is cut in half

Speed remains the same

Speed changes to 1/4th of the 10 m/s

Speed changes to 40 m/s

Speed doubles

Q2 A dad and his daughter are ice skating. They decide to try a physics experiment and stand facing each other on the ice. When they push off from each other, push apart, the dad will have the same momentum as the daughter.

True

False

Q3 Which of the following is an example or are examples of angular momentum? (choose any correct answer or answers)

Rotating wheels of a car

Bicycle tire

Marble traveling along the edge of a pie tin

Earth in orbit around the Sun

Q4 If two vehicles had the same speed and were traveling side-by-side on a road, which one would experience the greatest force of impact if it hit the wall and it took 2 seconds for the impact to occur for each vehicle?

Impact force would be the same

Small Car (1200 kg)

Pick-up Truck (4500 kg)

Q5 The longer the impact process takes, the lower the impact force will be.

True

False