25. A bat strikes a ball into the outfield. If the action force is the bat hitting the ball, the reaction force is
A. the bat being dropped
B. the ball hitting the ground
C. the ball flying into the air
O
D. the ball hitting the bat

65m

Explanation:

Twelve waves pass a dock in 3.60 If the waves are traveling at 19.5 m/s , what is the wavelength of the waves?

Velocity of a wave is expressed as;

V = frequency × wavelength

Given

Velocity = 19.5m/s

Frequency is the number of oscillations completed in 1sec, hence

Frequency= 3.6/12

Frequency = 0.3

Wavelength = vel/freq

Wavelength = 19.5/0.3

Wavelength = 65m