A 0.21 kg baseball moving at +25 m/s is slowed to a stop by a catcher who exerts a constant force of −360 N. a) How long does it take this force to stop the ball? Answer in units of s.

0.0146 s

Explanation:

First of all, we can find the acceleration of the ball by using Newton's second law of motion:

where:

F = -360 N is the force acting on the ball

m = 0.21 kg is the mass of the ball

a is the acceleration

Solving for a,

Then the ball moves by uniformly accelerated motion, so we can use the following suvat equation:

where:

u = +25 m/s is the initial velocity

v = 0 is the final velocity (it comes to a stop)

is the acceleration

t is the time it takes for the ball to stop

Solving for t,

reserve is the answer

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods