Use these equations to solve the following problems
xo= initial position
x= final position
vo = initial velocity
v = final velocity
The bar over the v means average velocity.
Question 1
1.
A marble is dropped from 2.5 m and hits the ground in 0.71 s. What is the final velocity before it hits the ground? (Hint: what is its initial velocity?)
Question 2
2.
An Olympic-class sprinter starts a race with an acceleration of 4.50 m/s2. What is her speed 2.40 s later?
Question 3
3.
A car skids to a stop to try to avoid hitting a deer. The car skids 21 m in 2.3 s. How fast was the car originally going?
A fireworks shell is accelerated from rest to a velocity of 65.0 m/s over a distance of 0.250 m.
