Since force is mass*acceleration,
F = 70kg * 9.8 m/s
You say 42m/s times (7s) the answer is 294m/s2 squares cause you times not sure but I am just a nice er at this sry if it’s wrong :)
A billiard ball strikes another of the same mass at rest and stops, and the second ball then moves with the same velocity as the first ball would be an example of an elastic collision. This type of collision conserve both kinetic energy and momentum. The kinetic energy before they collide is equal after the collision.
kilograms or mass hope this helps
Answer:
18.896ms-1
Explanation:
The tangential acceleration of the car= 0.747ms-2
The centripetal acceleration is given by v^2/r
0.747= v^2/r
V= √0.747*478= 18.896ms-1