P5: SUVAT AND VECTOR + SCALAR QUANTITIES

Question 1

What is the average speed of someone walking?

Answer 1

1.5m/s

Question 2

What is the average speed of someone running?

Answer 2

3m/s

Question 3

What is the average speed of someone cycling?

Answer 3

6m/s

Question 4

What is the average speed of a bus?

Answer 4

40mph (18m/s)

Question 5

What is the average speed of a train?

Answer 5

125mph (56m/s)

Question 6

What is the average speed of a plane?

Answer 6

550mph (245m/s)

Question 7

What is a scalar quantity?

Answer 7

has only magnitude

Question 8

What are examples of scalar quantities?

Answer 8

-power
-mass
-energy
-temp
-distance
-speed

Question 9

What is a vector quantity?

Answer 9

has magnitude and direction

Question 10

What are examples of vector quantities?

Answer 10

-acceleration
-force
-velocity
-displacement

Question 11

What is the equation that links speed, distance and time?

Answer 11

speed (m/s) = distance (m) / time (s) (V = s/t)

Question 12

How do you calculate speed from a distance time graph?

Answer 12

work out the gradient (the steeper the gradient the higher the speed)

Question 13

What is the equation linking acceleration, change in velocity and time?

Answer 13

acceleration (m/s^2) = change in velocity (m/s) / time (s) (a = v-u/t)

Question 14

What is the equation linking acceleration, change in velocity and distance?

Answer 14

final velocity^2 (m/s) - initial velocity^2 (m/s) = 2 x acceleration (m/s^2) x distance (m)

Question 15

How do you calculate acceleration from a velocity-time graph?

Answer 15

calculate the gradient

Question 16

How do you calculate distance from a velocity-time graph?

Answer 16

calculate the area under the graph