Physics Semester 1 Final Review

A student drops a rock from the top of a bridge. How fast is the rock moving after falling for 3 seconds? Assume that the rock does not hit the ground in 3 seconds. Air resistance is negligible.

• 10 m/s

• 30 m/s

• 60 m/s

• 90 m/s

Tags

NGSS.HS-PS2-1

A group of students are conducting an experiment on free fall motion by dropping bricks from different heights out of the window of a tall building. During the first trial they drop a brick from a window that is 20 m high and it take T seconds to fall to the ground. The second trial they drop an identical brick from a window 80 m high. How long will it take to fall to the ground? Air resistance is negligible.

• T seconds

• 2T seconds

• 4T seconds

• 16T seconds

Use the graph below of a runner moving in a straight line for the following 4 questions.

When is the runner moving in the negative/backwards direction?

• Between 80-104 seconds

• Between 104-110 seconds

• Between 80-110 seconds

• Between 110-130 seconds

Use the graph below of a runner moving in a straight line for the following 4 questions.

When is the runner moving with the fastest speed?

• Between 0-70 seconds

• Between 70-80 seconds

• Between 80-110 seconds

• Between 110-130 seconds

Use the graph below of a runner moving in a straight line for the following 4 questions.

When is the runner most likely to be walking?

• Between 0-70 seconds

• Between 70-80 seconds

• Between 80-110 seconds

• Between 110-130 seconds

Use the graph below of a runner moving in a straight line for the following 4 questions.

What is the distance and displacement for the runner shown in the graph?

• 250 m, -30 m

• 250 m, -40 m

• 330 m, -30 m

• 330 m, -40 m

Use the Velocity-Time graph below of a car moving on flat ground in one dimension for the following 4 questions.

When does the car change direction?

• t = 5 sec

• t = 7 sec

• t = 9 sec

• the car never changes directions

Use the Velocity-Time graph below of a car moving on flat ground in one dimension for the following 4 questions.

When is the car’s speed decreasing?

• Between 0-5 seconds

• Between 5-7 seconds

• Between 7-9 seconds

• Between 9-10 seconds

Use the Velocity-Time graph below of a car moving on flat ground in one dimension for the following 4 questions.

When is the car moving at non-zero, constant velocity?

• Between 0-5 seconds

• Between 5-7 seconds

• Between 7-9 seconds

• Between 9-10 seconds

Use the Velocity-Time graph below of a car moving on flat ground in one dimension for the following 4 questions.

When does the car travel the furthest distance?

• Between 0-5 seconds

• Between 5-7 seconds

• Between 7-9 seconds

• Between 9-10 seconds