The kinetic energy K = 0.5 * m * v² must be equal to the potential energy U = m * g * h.
m mass
v velocity
h height
g = 9.81m/s²
The mass m cancels out:
0.5 * v² = g * h
Solve for height h and transform to distance traveled.
(sin (4°) = height / distance)
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I know for a fact the answer is D. the distance traveled by the wave during one full cycle
Answer:
45 m
Explanation:
Use Big Five #5 with v0 = 0 (calling down the positive direction).
(a) The mass of the bullet is
and its speed is
, so its momentum is
The pitcher claims that he can throw the ball with the same momentum p of the ball. Since the mass of the ball is m=0.148 kg, this means that the velocity of the ball must be:
(b) The kinetic energy of the bullet is:
while the kinetic energy of the ball is:
So, the bullet has greater kinetic energy than the ball.
