EOY Physics

Refer to the diagram showing the position vs. time graph for runner 1 and runner 2. At which moment in time (represented by letters A through D) will the two runners represented in this graph have the same speed?

• The entire time

• Between B - C

• Between C - D

• They will never have the same speed.

A bicyclist starts from rest and accelerates along a straight path to a speed of 12.15 m/s in a time of 4.5 seconds. What is the bicyclist's acceleration to the nearest tenth of a m/s²? Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

Motion sensors recorded the following data about a runner during a cross-country race. Refer to the diagram provided. During which segment of the race did the runner have the greatest speed?

• W

• X

• Y

• Z

A race car accelerates from the starting line at an average rate of 8 m/s² for 5 seconds. How far does the race car travel in those 5 seconds?

A tennis ball is hit by a tennis player and travels 20 meters to a wall. Then, the ball rebounds off the wall and travels 5.0 meters back toward the tennis player. How does the total horizontal distance traveled by the tennis ball compare to the magnitude of the tennis ball's displacement from the tennis player?

• The total distance is 5.0 m shorter than the displacement.

• The total distance is 10 m shorter than the displacement.

• The total distance is 5.0 m longer than the displacement.

• The total distance is 10 m longer than the displacement.

Which graph best represents the motion of an object that was initially at rest and is accelerating uniformly?

• Distance vs. Time graph showing a straight line increasing steeply.

• Distance vs. Time graph showing a horizontal line.

• Speed vs. Time graph showing a straight line increasing steeply.

• Speed vs. Time graph showing a horizontal line.

A baseball was thrown with an initial velocity of 14 m/s at an angle above the horizontal. It remained in the air for 2 seconds. Which of the following quantities was constant while the baseball was in the air?

• acceleration

• displacement

• position

• velocity

A tennis ball rolled off the edge of a table that has a height of 1.00m. The ball took 0.45 s to hit the ground 0.72 m from the table. What was the horizontal velocity of the ball as it rolled off the table?

• A) 0 m/s

• B) 0.63 m/s

• C) 1.6 m/s

• D) 2.2 m/s

Two people each have a mass of 55 kg. They are both in an elevator that has a mass of 240 kg. When the elevator begins to move, the people and the elevator have an upward acceleration of 1.00 m/s². What is the net force that acts on the elevator as it accelerates upward at 1.00 m/s²?

• F) 9.8 N

• G) 110 N

• H) 130 N

• J) 350 N

A boat travels 12.0 m while it reduces its velocity from 9.5 m/s to 5.5 m/s. What is the magnitude of the boat's acceleration while it travels the 12.0 m?

• A) 1.3 m/s²

• B) 2.5 m/s²

• C) 3.0 m/s²

• D) 7.5 m/s²