A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg/m3 and the density of helium in the
1 answer:
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Answer:
0.061 J
Explanation:
The kinetic energy of an object is given by
where
m is the mass of the object
v is its speed
For the toy truck in the problem, we have
m = 0.1 kg is its mass
v = 1.1 m/s is its speed
Putting the numbers into the equation, we find
Answer:
The maximum height above its initial position is:
Explanation:
Using momentum conservation:
(1)
Where:
- m(b) is the mass of the bullet
- m(B) is the mass of the block
- v(ib) is the initial velocity of the bullet
- v(fb) is the final velocity of the bullet
- v(fB) is the final velocity of the block
Let's find v(fb) using equation (1)
We need to find the maximum height, it means that all kinetic energy converts into gravitational potential energy.
I hope it helps you!