AP C Mechanics - Kinematics #1

Starting from rest, a cart moves to the right in a straight line along a track. The motion of the cart is represented by the dots shown, recorded at equal time intervals. Which of the following best represents the acceleration vectors at the beginning, middle, and end of the motion?

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NGSS.HS-PS2-1

Astronauts travel to another planet and wish to determine an accurate value for the acceleration due to gravity. They drop an object from the edge of a very tall cliff and with a motion sensor collect the data shown. If air resistance is negligible, the magnitude of the acceleration of the projectile is most nearly

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NGSS.HS-PS2-1

A small sphere is launched straight upward. The vertical position as a function of time is shown in the graph. Which of the following best describes the sphere’s velocity during the time period shown?

• The velocity is initially positive, decreases to zero, and then becomes negative.

• The velocity is always negative and constant.

• The velocity is always positive and decreasing

• The velocity is always positive and increasing.

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NGSS.HS-PS2-1

For the block shown above, which of the following is the best equation for describing the position x(t) of the block as a function of time t ?

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NGSS.HS-PS2-1

The figure above shows the velocity vv and acceleration aa vectors for a ball thrown into the air. Assuming air resistance is negligible, which of the following could be the velocity and acceleration vectors when the ball is at the highest point in its path?

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Tags

NGSS.HS-PS2-1

The velocity v of an object moving along the x-axis of a coordinate system as a function of time t is represented by the data shown in the chart. Which of the following graphs best represents the data and has a correct best-fit line?

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The velocity v as a function of time t for a ball moving along the x-axis is represented in the graph shown. Which of the following statements accurately describes the motion of the ball?

• The ball has a constant acceleration and moves in the +x direction for the entire 10s time period.

• The ball is initially moving in the −x direction with a speed of 3.0m/s , slows down uniformly for 6.0s, comes to a stop, and then moves with increasing speed in the −x direction.

• The ball is initially moving in the +x direction with a speed of 3.0m/s. At t=6.0s the ball stops moving momentarily and then starts moving again in the −x direction.

• The ball is initially moving in the −x direction with a speed of 3.0m/s, slows down uniformly for 6.0s, comes to a stop, and then speeds up uniformly in the +x direction.