Physical Science Chapter 11 Test Review

Physical Science Chapter 11 Test Review

Question 1 • What is acceleration?

Question 1 • What is acceleration? • The rate at which velocity changes.

Question 2 • What is the difference in speed and velocity?

Question 2 • What is the difference in speed and velocity? • Velocity includes the speed AND the direction.

Question 3 • What is free fall?

Question 3 • What is free fall? (For an extra point, what is the value for free fall) • The movement of an object toward Earth because of gravity. • Bonus - Acceleration due to gravity is 9.8 m/s2

Question 4 • When an object is free falling it has a constant __________. • A. velocity • B. acceleration • C. distance • D. speed

Question 5 • What does the slope on a distance-time graph indicate?

Question 5 • What does the slope on a distance-time graph indicate? • speed

Question 6 • What does the slope on a velocity-time graph indicate?

Question 6 • What does the slope on a velocity-time graph indicate? • acceleration

Question 7 • What is the difference in distance and displacement?

Question 7 • What is the difference in distance and displacement? • Distance is the path traveled. Displacement is a straight line from the starting point to the finishing point.

Question 8 • A man leaves his house to go for a jog. He jogs 5 miles around his neighborhood and returns to his house. What is his distance? What is his displacement?

Question 8 • A man leaves his house to go for a jog. He jogs 5 miles around his neighborhood and returns to his house. What is his distance? What is his displacement? • Distance = 5 miles • Displacement = 0 miles

Question 9 • A boy runs 200m east to pick up a ball, and then he runs 100m west. What is his distance and his displacement?

Question 9 • A boy runs 200m east to pick up a ball, and then he runs 100m west. What is his distance and his displacement (be sure to include direction for displacement)? • Distance = 300m • Displacement = 100m east

Question 10 • How do you calculate speed?

Question 10 • How do you calculate speed? • s = d/t

Question 11 • How do you calculate acceleration?

Question 11 • How do you calculate acceleration? • a = vf – vi t

Question 12 • What are 3 ways to change acceleration?

Question 12 • What are 3 ways to change acceleration? • Change speed, direction, or both. OR speed up, slow down, or change direction.

Question 13 • What does negative acceleration mean?

Question 13 • What does negative acceleration mean? • The object is slowing down.

Question 14 • Objects not moving with respect to one another is _________.

Question 14 • Objects not moving with respect to one another is _________. • Frame of reference

Question 15 • If a car travels at a constant speed around a curve, what 2 values are changing?

Question 15 • If a car travels at a constant speed around a curve, what 2 values are changing? • Velocity and acceleration

Question 16 • A person is riding in a car going 50 mi/hr from what frame of reference are they moving?

Question 16 • A person is riding in a car going 50 mi/hr from what frame of reference are they moving? • From a person on the side of the road

Question 17 • What is the speed on a bike that travels 3 miles in 20 min.?

Question 17 • What is the speed on a bike that travels 3 miles in 20 min.? • 0.15 mi/min

Question 18 • If a dog walks 50m in 20s, stops to poop for 5s, and chases a squirrel 100m in 10s, what is his average speed?

Question 18 • If a dog walks 50m in 20s, stops to poop for 5s, and chases a squirrel 100m in 10s, what is his average speed? • 4.29 m/s

Question 19 • A car starts at rest and then increases its speed to 10 m/s in 15s, what is the acceleration?

Question 19 • A car starts at rest and then increases its speed to 10 m/s in 15s, what is the acceleration? • 0.67 m/s2

Question 20 • A school bus is driving 20 m/s and slows down to 5 m/s in 50s, what is acceleration?

Question 20 • A school bus is driving 20 m/s and slows down to 5 m/s in 50s, what is acceleration? • -0.3 m/s2

Question 21 • If you ride in an airplane at 298 km/hr for 3 hr, then how far did you travel?

Question 21 • If you ride in an airplane at 298 km/hr for 3 hr, then how far did you travel? • 894 km

Question 22 • What does a horizontal line mean on a distance-time graph?

Question 22 • What does a horizontal line mean on a distance-time graph? • The object is not moving.

Question 23 • What does a horizontal line mean on a speed-time graph?

Question 23 • What does a horizontal line mean on a speed-time graph? • The speed of the object is constant.

Question 24 On Graph D, what is happening to the speed of the person walking from his house?

Question 24 On Graph D, what is happening to the speed of the person walking from his house? He is speeding up because the slope is increasing.

Question 25 • On graph E, what is happening on the 3rd line?

Physical Science Chapter 11 Test Review