Answer:
The answer are given above in attachment.
Increase in internal enegy =energy supplied by heating + energy supplied by doing work
Explanation:
32. The area under the curve from t = 0 and t = 2 is the area of the triangle. The base of the triangle is 2 seconds, and the height of the triangle is 2 m/s. The area is therefore:
A = ½ bh
A = ½ (2 s) (2 m/s)
A = 2 m
33. The car is not moving when the velocity is 0 m/s. This occurs at t = 0, t = 6, and t = 10.
Answer:
Explanation:
Given:
- mass of the first ball,
- initial velocity of the first ball,
- mass of the second ball,
- initial velocity of the second ball,
- Final velocity of the first ball,
<u>Using the law of conservation of linear momentum:</u>
where: final velocity of the second ball
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<u>Now the kinetic energy lost in the collision:</u>
Δ KE = (Sum of initial individual kinetic energy) - (Sum of individual final kinetic energy)