Science Vocab and Questions: Ch 19

Question 1

The speed and direction of a moving objects is it’s

Answer 1

velocity

Question 2

The distance an object an object travels in a certain amount of time is it’s

Answer 2

speed

Question 3

The rate of change of velocity over time is

Answer 3

Acceleration

Question 4

The tendency of an object to maintain its state of motion is

Answer 4

inertia

Question 5

when a boy lands on a trampoline.what is the reaction force?

Answer 5

The boy pushing down

Question 6

The diagram shows a force acting on an object. what is the direction of the objects accelation?

Answer 6

Opposite to the force

Question 7

What force helps you stop when you’re skateboarding?

Answer 7

friction

Question 8

A worm crawls 2 meters in 2 hours. What is the worm’s speed?

Answer 8

1m/hr

Question 9

which of the following is NOT part of Newton’s second law?

Answer 9

position

Question 10

A girl ice-skates in a circle at a constant speed of 10km/hr. What part of her motion is changing?

Answer 10

Velocity

Question 11

Which of the following DOES NOT cause a car to accelerate?

Answer 11

brakes

Question 12

If you were a bicycle racer, what feature would you use for in a bike?

Answer 12

low mass

Question 13

A balloon rises at a rate of 2 km/hr. What is its velocity?

Answer 13

2 km/hr, upward

Question 14

If you walk on a log floating in water, the log moves backward. Which of the following explains this?

Answer 14

Newton’s third law

Question 15

A truck, a car, a motorcycle, and a train are all moving at the same speed. Which has the most momentum?

Answer 15

A truck

Question 16

Which two factors make up momentum?

Answer 16

mass and velocity