AP Physics Opener 10/12

A cart is constrained to move along a straight line. A varying net force along the direction of motion is exerted on the cart. The cart’s velocity v as a function of time t is shown in the graph above. The five labeled points divide the graph into four sections.

For which segment does the cart move the greatest distance?

• AB

• BC

• CD

• DE

Three identical rocks are launched with identical speeds from the top of a platform of height 0 h . The rocks are launched in the directions indicated above.

Which of the following correctly relates the magnitude vy of the vertical component of the velocity of each rock immediately before it hits the ground?

• (vy1 = vy2) > vy3

• vy1 > vy3 > vy2

• vy2 > vy3 > vy1

• vy1 = vy2 = vy3

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A student wants to study the motion of an object that has a constant acceleration. Which of the following experiments could the student conduct to provide the best situations in which an object has a constant acceleration? Select two answers.

• Release a ball from rest near Earth’s surface.

• Release a toy car from rest such that it travels along different looped sections of a track.

• Launch a water-propelled rocket from rest such that it travels into the air and falls back to Earth’s surface.

• Release a cart from rest such that it travels down an incline of 40° with respect to the ground.

Tags

NGSS.HS-PS2-1