forces and motion

Question 1

What is a scalar?

Answer 1

Things that we measure that have a magnitude (size) only are scalars.

Question 2

What is a vector?

Answer 2

Things that we measure that have both magnitude and direction are vectors.

Question 3

What are 3 examples of scalars?

Answer 3

Any from time, mass, temperature, speed, direction

Question 4

What are 3 examples of vectors?

Answer 4

Any from forces (weight), displacement, velocity, acceleration, momentum

Question 5

How can a vector be represented?

Answer 5

They are represented by arrows.

Question 6

How could a car be moving at a constant speed but have a changing velocity?

Answer 6

As velocity is a vector if the direction of the car changes the velocity will change, at a constant speed.

Question 7

How do you measure distance travelled (m)?

Answer 7

Speed (m/s) x time (s)

Question 8

What equation do you use for calculating speed?

Answer 8

distance travelled ÷ time taken

Question 9

Is speed a scalar or vector quantity?

Answer 9

Vector

Question 10

What is the typical speed of a person walking?

Answer 10

1.5 m/s

Question 11

What is the equation that links speed distance and time?

Answer 11

Speed = distance ÷ time