When a bat hits a ball, the impulse is
a) the force multiplied by the time the objects are in contact.
b) the change in velocity multiplied by the force.
c) the mass multiplied by the force.
d) the mass multiplied by the acceleration.

A) The force multiplied by the time the objects are in contact.

Hope this helps!

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.