Kinematics unit 1.2

Question 1

Equation for speed

Answer 1

Speed = Distance / Time

Question 2

Define instantaneous Velocity

Answer 2

Rate of change of displacement

Question 3

Define instantaneous Speed

Answer 3

Rate of change of its distance travelled

Question 4

Define instantaneous Acceleration

Answer 4

Rate of change of Velocity

Question 5

What is the gradient of a Displacement time graph

Answer 5

Velocity

Question 6

What does a Straight line represent in a Displacement time graph

Answer 6

Constant gradient

Question 7

What does a increasing gradient (upwards curve) represent in a Displacement time graph

Answer 7

increase in velocity

Question 8

What does a decreasing gradient (decreasing curve) represent in a Displacement time graph

Answer 8

Decrease in velocity

Question 9

What does a Negative gradient represent in a Displacement time graph

Answer 9

Negative velocity - returning back to the place the object came from

Question 10

What is the gradient of a Velocity time graph

Answer 10

acceleration

Question 11

What is the area between line and axis of a Velocity time graph

Answer 11

Displacement

Question 12

What does a Positive Straight line represent in a Velocity time graph

Answer 12

Increasing acceleration

Question 13

What does a Negative Straight line represent in a Velocity time graph

Answer 13

Decreasing acceleration

Question 14

What does constant velocity (Gradient=0) in a Velocity time graph represent?

Answer 14

acceleration = 0

Question 15

What are the 4 suvat equations?

Answer 15

1. v=u+at
2. v^2=u^2+2as
3. s=ut+1/2at^2
4. s=t(u+v)/2

Question 16

Define Acceleration Due to Gravity

Answer 16

Acceleration of a free falling object. (Gravity only force)

Question 17

Link between Drag and Velocity

Answer 17

Faster you go greater the drag ie acceleration is not constant.