Question 1

A person walks such that their position is represented by the motion diagram shown (dots labeled 3, 2, 1, 0 from left to right). What best describes the motion of the person?

Accepted Answer

The person is moving to the right, slowing down.

Question 2

Which of the following trials (see position vs. time graphs) shows an object experiencing constant acceleration?

Accepted Answer

Trial B

Question 3

For the velocity vs. time graph shown (velocity alternates between positive and negative values), what is the total displacement of the object from $$t = 0 s to$$ $$t = 20 s$$?

Accepted Answer

$$0 m$$

Question 4

In the velocity vs. time graph (with intervals A: $$0-30 s$$, B: $$30-60 s$$, C: $$60-80 s$$, D: $$80-100 s$$), which interval represents uniform motion?

Accepted Answer

Interval C

Question 5

A car moves with the velocity shown in the graph (interval D: $$80-100 s$$, $$v = 10 m/s to$$ $$v = 15 m/s). $$What is the displacement during this interval?

Accepted Answer

$$\Delta x = 250 m$$

Question 6

You throw two balls from a balcony: Ball A straight up at speed $$v_0$$, Ball B straight down at speed $$v_0. $$Which ball has a greater velocity just before hitting the ground (ignore air resistance)?

Accepted Answer

Their velocities would be the same.

Question 7

You throw two balls from a balcony: Ball A straight up at speed $$v_0$$, Ball B straight down at speed $$v_0. $$Which ball lands first (ignore air resistance)?

Accepted Answer

Ball B

Question 8

A bird flies north at $$3.00 m/s. A $$wind blows from the southwest at $$1.20 m/s. $$What is the magnitude of the bird's velocity relative to the ground?

Accepted Answer

$$3.85 m/s$$

Question 9

A cannon is fired from a $$5.00 m $$high cliff at $$100 m/s$$, $$45^\circ$$ above the horizontal. What is the horizontal distance from the cannon to where the ball lands? (Assume $$g = 9.8 m/s$^2)$$

Accepted Answer

$$1,030 m$$

Question 10

A flea jumps straight up, reaching a take-off speed of $$1.00 m/s $$over a distance of $$0.50 mm. $$What is the flea's acceleration during the jump phase?

Accepted Answer

$$1,000$$ $$m/s^2$

Question 11

Ignoring air resistance, how high will the flea go if it jumps straight up with a take-off speed of $$1.00 m/s$$?

Accepted Answer

$$0.051 m$$

Question 12

Two blocks are connected by a cord over a frictionless pulley as shown. If $$M = 100 kg$$, $$m = 50 kg$$, $$\$$theta_1$$ = 30^\circ$$, $$\$$theta_2$$ = 53.1^\circ$$, which direction will the system move when released from rest?

Accepted Answer

Block M will accelerate down the incline.

Question 13

For the two-block system on inclines, what is the correct expression for the acceleration $$a of $$the blocks (neglecting friction and pulley mass)?

Accepted Answer

$$a = \frac{M g \sin \$$theta_1$$ - m g \sin \$$theta_2$$}{M + m}$$

Question 14

Which of the following best describes the motion in Trial D (position vs. time graph)?

Accepted Answer

The object is moving with constant negative velocity.

Question 15

In the velocity vs. time graph (first image), during which time interval is the object moving in the negative direction and speeding up?

Accepted Answer

$$t = 10 s to$$ $$t = 15 s$$

Physics with Calculus Practice Test Guidance

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