Kinematics

Question 1

What calculation links distance, speed and time?

Answer 1

Distance=speed/time

Question 2

How do we convert from kmph to m/s?

Answer 2

x1000
/3600

Question 3

How do we get from s to v to a in variable acceleration?

Answer 3

differentiate with respect to t

Question 4

How do we get from a to v to s in variable acceleration?

Answer 4

Integrate with respect to t

Question 5

For velocity time graphs how do we find the distance travelled?

Answer 5

Find the area under the graaph

Question 6

How would we find the distance travelled for this graph?

Answer 6

Remember we are finding the distance travelled so we do not take away the negative area

Question 7

How do we find the acceleration of a velocity time graph?

Answer 7

The gradient of the line

Question 8

How do we find the gradient when the acceleration is variable?

Answer 8

Differentiate

Question 9

Modelling Assumption: How does having a smooth pulley affect the model?

Answer 9

Tension is equal either side of the pulley

Question 10

Modelling Assumption: How does having a light string affect the model?

Answer 10

Tension is equal throughout

Question 11

Modelling Assumption: How does having a inextensible string affect the model?

Answer 11

Both paticles have the same acceleration

Question 12

Modelling Assumption: How does modelling things as particles affect the model?

Answer 12

We can ignore air resistance and rotaitonal effects

Question 13

Modelling Assumption: How does modelling with a rod affect the model?

Answer 13

It is rigid, doesn’t bend and has no thickness