Question 1

A car moves along a straight road such that its position as a function of time is given by $$x(t) = 4t + 2. $$What is the velocity of the car?

Accepted Answer

$$4\ \mathrm{m/s}$$

Question 2

A runner covers 20 m in 4.0 s at a constant speed. If the runner continues at this speed, how far will they travel in 10 s?

Accepted Answer

$$50\ \mathrm{m}$$

Question 3

The area under a velocity-versus-time graph represents which physical quantity?

Accepted Answer

The displacement of the object

Question 4

A cyclist riding at $$20\ \mathrm{m/s}$$ sees a stop sign and comes to a complete stop in $$4\ \mathrm{s}. $$What is the cyclist's average acceleration?

Accepted Answer

$$-5\ \mathrm{m/s^2$}$$

Question 5

A ball is thrown straight up. At its highest point, what is the acceleration of the ball?

Accepted Answer

$$-9.8\ \mathrm{m/s^2$}$$

Question 6

A drag racer starts from rest and travels $$6.0\ \mathrm{m} in$$ $$1.0\ \mathrm{s}$$ with constant acceleration. How far will the car have traveled after $$5.0\ \mathrm{s} if $$the acceleration continues?

Accepted Answer

$$150\ \mathrm{m}$$

Question 7

A Boeing 747 accelerates at $$2.6\ \mathrm{m/s^2$}$$ from rest. What is the minimum runway length required for it to reach a takeoff speed of $$70\ \mathrm{m/s}$$?

Accepted Answer

$$940\ \mathrm{m}$$

Question 8

Which of the following is an example of uniform motion?

Accepted Answer

A hockey puck sliding in a straight line at a constant speed

Question 9

A heavy rock is dropped from rest at the top of a $$100\ \mathrm{m}$$ cliff. How long does it take to reach the ground? (Ignore air resistance, $$g = 9.8\ \mathrm{m/s^2$})$$

Accepted Answer

$$4.5\ \mathrm{s}$$

Question 10

A car slows down while moving away from the origin. What is the sign of its velocity and acceleration?

Accepted Answer

Velocity is positive, acceleration is negative

Question 11

A springbok jumps straight up with an initial speed of $$7.0\ \mathrm{m/s}. $$How long will it take to reach its highest point? ($$g = 9.8\ \mathrm{m/s^2$})$$

Accepted Answer

$$0.71\ \mathrm{s}$$

Question 12

A car accelerates from rest at $$3.0\ \mathrm{m/s^2$}$$ for $$5.0\ \mathrm{s}. $$What is its final velocity?

Accepted Answer

$$15\ \mathrm{m/s}$$

Question 13

A ball is tossed straight up. At what point is its velocity zero?

Accepted Answer

At the highest point

Question 14

Which of the following statements about free fall is correct?

Accepted Answer

All objects in free fall have the same acceleration regardless of mass

Question 15

A car travels at $$15\ \mathrm{m/s}$$ and comes to rest in $$1.5\ \mathrm{s}. $$What is the magnitude of its acceleration?

Accepted Answer

$$10\ \mathrm{m/s^2$}$$

Question 16

A velocity-versus-time graph for an object is a straight line with a positive slope. What does this indicate about the object's motion?

Accepted Answer

The object is accelerating at a constant rate

Question 17

A coin is tossed vertically upward and then falls back down. Ignoring air resistance, what is the acceleration of the coin during its entire flight?

Accepted Answer

$$-9.8\ \mathrm{m/s^2$}$$

Question 18

A car moves with a constant velocity of $$10\ \mathrm{m/s}$$ for $$8\ \mathrm{s}. $$What is its displacement?

Accepted Answer

$$80\ \mathrm{m}$$

Question 19

A lion accelerates from rest at $$9.5\ \mathrm{m/s^2$} to a $$speed of $$4.5\ \mathrm{m/s}. $$How much time does this take?

Accepted Answer

$$0.47\ \mathrm{s}$$

Motion in One Dimension: Physics with Calculus Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard