Speed and Velocity

Question 1

Speed

Answer 1

Speed is a measure of how far something travels in a particular time.

Question 2

Speed formula

Answer 2

Speed (m/s) = distance travelled (m)/ time taken (s)

Question 3

Calculate speed Run 100 m in 20 seconds

Answer 3

Speed = 100/20 = 5 m/s

Question 4

Average speed formula

Answer 4

Average speed = overall distance/overall time

Question 5

distance formula

Answer 5

distance = speed x time

Question 6

Time formula

Answer 6

time = distance/speed

Question 7

State what is acceleration

Answer 7

Acceleration means the speed is increasing

Question 8

State what is deceleration

Answer 8

Deceleration means speed is decreasing

Question 9

State what is constant speed

Answer 9

Constant speed means travel at same speed

Question 10

State what stationary

Answer 10

Stationary means the object is not moving

Question 11

Acceleration formula

Answer 11

Acceleration = End speed - start speed/time

Question 12

What does a distance time graph show?

Answer 12

The distance time graph shows the distance an object travels for a specific time

Question 13

What is the independent variable in the distance time graph?

Answer 13

Time is the independent variable.

Question 14

Explain how to calculate speed

Explain speed graph

Answer 14

Speed = distance /time

Speed

Constant speed

Stationary - not moving

Question 15

Explain graph

Explain how to calculate velocity

Answer 15

Acceleration = change in speed/time

Acceleration = End speed - start speed/time

Acceleration = (v-u)/t

Graph

Acceleration

Deceleration

Constant velocity

Question 16

Explain speed triangle

Answer 16

Speed = distance/time

distance = speed / time

time = distance /speed

Question 17

Calculate acceleration

start speed 5 mph

end speed 65 mph

time 20 seconds

Answer 17

acceleration = end speed - start speed / time

= 65-5 /20

=60/20

= 3 m/s2