Question

You started to run at 10 km/h when you left your house and you arrived at school 30 minutes later. Assuming that your average acceleration was 30 km/h2, how fast were you running when you arrived?

Answer 1

Answer:

Using the equation of motion v=u+at

where v is the final speed

v=10 km/h

a=30 km/h^2

t=0.5 hours

v=10+(30×0.5)

=10+15

=25 km/h