Midterm Examination in Physics

Ava is driving her car at a speed of 1.00×105 kph on a straight highway. How far will she travel in 1 week?

• 2.40×106 [km]

• 1.68×106 [km]

• 2.40×107 [km]

• 1.68×107 [km]

Athena is looking for a way back to headquarters. From her initial position, headquarters is 3.0 [km] directly north. She then decides to walk 1.0 [km] eastward. What is the location of headquarters with respect to her new position?

• 18° North of West

• 72° North of West

• 18° East of North

• 72° East of North

Abigail is observing the speed of a car as a function of time. If the time is measured in seconds, what is the unit of C in the equation that describes the car's speed?

• m∙s

• m/s

• m/s2

• ms3

It took Crisel an hour to walk to the mall from her house and back. The distance from her house to the mall is 4 km. Which of the following statements is FALSE?

• Displacement is zero.

• Distance is zero.

• Average velocity is zero.

• Speed is 8 kmh

Arjun is walking in a park and moves 6 meters east and 8 meters north. What is the magnitude of his displacement from the starting point?

• 10

• 14

• 12

• 7

Aria is walking along a straight path. On an axis in which moving from right to left is positive, what is the displacement and distance of Aria who walks 32 m to the right and then 17 m to the left?

• Displacement is -15 m and distance is -49m.

• Displacement is -15 m and distance is 49 m.

• Displacement is 15 m and distance is -49 m.

• Displacement is 15 m and distance is 49 m.

Tiana jogs 1.5 km along a straight path and then turns and jogs 2.4 km in the opposite direction. She then turns back and jogs 0.7 km in the original direction. Let Tiana's original direction be the positive direction. What are the displacement and distance she jogged?

• Displacement is 4.6 km, and distance is -0.2 km.

• Displacement is -0.2 km, and distance is 4.6 km.

• Displacement is 4.6 km, and distance is +0.2 km.

• Displacement is +0.2 km, and distance is 4.6 km.

At t=0, the velocity of your classmate Grace is +2.00 ms with zero acceleration. You noticed that at t=5.00 s, Grace's instantaneous velocity and acceleration are now +10.0 m/s and +2.00 m/s2, respectively. What is Grace's average acceleration from t=0 to t=5.00 s?

• +0.40 m/s

• +1.00 m/s

• +1.60 m/s

• +2.40 m/s

Avery is driving a car and wants to understand how her speed changes over time. She decides to look at a velocity vs. time graph of her journey. What information could she obtain by looking at this graph?

• acceleration

• direction of motion

• reference frame of the motion

• shortest path

Billy drops a ball from a height of 1 m. The ball bounces back to a height of 0.8 m, then bounces again to a height of 0.5 m, and bounces once more to a height of 0.2 m. Up is the positive direction. What is the total displacement of the ball and the total distance travelled by the ball?

• The displacement is equal to -4.0 m and the distance is equal to 4.0 m.

• The displacement is equal to 0.5 m and the distance is equal to 2.5 m.

• The displacement is equal to 4.0 m and the distance is equal to 1.0 m.

• The displacement is equal to -0.5 m and the distance is equal to 2.5 m.