A 1.0-kg block of aluminum is at a temperature of 50 Celsius. How much thermal energy will it lose when it’s temperature is redu
1 answer:
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Answer:
6.52m/s
Explanation:
Hello!
To solve this problem follow the steps below, the complete procedure is in the attached image
1. draw a complete outline of the problem involving forces and geometries
2. Find the time that elapses from when the ball is thrown until it hits the water, this is achieved using the kinematic equation for constant acceleration and zero vertical initial velocity.
3. taking into account that the ball is launched horizontally, and that there is no horizontal acceleration, the only thing we must do is find the speed by dividing the distance traveled horizontally and dividing it by time
Answer:
The work done is
Explanation:
<u>Data</u>
- Mass:
- height:
- acceleration due to gravity:
Non conservative force act
The work is:
Δ
+Δ
KE and PE means kinetic energy and potential energy respectively.
The change in kinetic energy is 0, since the skydiver’s velocity remains constant.
Therefore
Δ
Δ
substitute the values