You serve a volley ball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball has_______ energy. Can
1 answer:
You might be interested in
Answer:
T' = 2T
Explanation:
The time period of a simple pendulum is given by the relation as follows :
l is length of the pendulum
g is acceleration due to gravity
If the length is increased four time, new length is l' = 4l
So,
New time period is :
So, the new time period is 2 times of the initial time period.
Answer:
Explanation:
mass of the astronaut including the spacesuit,
distance of astronaut from the spaceship, d = 13 m
mass of the oxygen tank, m = 3 kg
Speed of tank with respect to spaceship,
a)
<u>Using the conservation of linear momentum:</u>
total momentum before collision = total momentum after collision
b)
She mush hold her breath until she reaches the spaceship, i.e.