Momentum of the wagon increases by (200 x 3)
= 600 newton-sec
= 600 kg-m/sec
Answer:
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Answer:
Q = 425 kJ
Explanation:
Given that,
Mass, m = 25 kg
The clown doll head that heats up from 25°C to 35°C
The specific heat is 1700 J/kg°C
We need to find the internal energy of it. The heat required to raise the temperature is given by the formula as follows :

So, 425 kJ of thermal energy is severed.
Answer: c) The line shows a change in speed if its angle changes.
I'm not sure
Explanation: