Answer:
(a) p = 3.4 kg-m/s (b) 37.78 N.
Explanation:
Mass of a basketball, m = 0.4 kg
Initial velocity of the ball, u = -5.7 m/s (as it comes down so it is negative)
It rebounds upward at a speed of 2.8 m/s (as it rebounds so positive)
(a) Change in momentum = final momentum - initial momentum
p = m(v-u)
p = 0.4 (2.8-(-5.7))
p = 3.4 kg-m/s
(b) Impulse = change in momentum
Ft = 3.4
We have, t = 0.09 s
Hence, this is the required solution.
2 minutes is 120 seconds, so if you were finding vibrations per minute, it would be 60 times a minute.
weight less on moon than on earth.
high on lift off - G force
low in orbit.
zero at a point between earth and moon
Answer:
12 m/s
Explanation:
divide distance over time
72/6 = 12
Answer:
kinetic energy = 414 J
Explanation:
given data
mass = 23 kg
speed = 6 m/s
height = 17 m
to find out
kinetic energy
solution
we get kinetic energy that is express as
kinetic energy = 0.5 × m × v² ..........................1
here m is mass and v is speed so
put here value we get kinetic energy
kinetic energy = 0.5 × 23 × 6²
kinetic energy = 414 J
