Explanation:
<h2>Speed is the rate of change of distance with time.</h2>
Answer:
In an exothermic reaction the energy gained by the surroundings must be <u>equal to</u> the energy lost by the reaction.
Explanation:
Exothermic reactions occur by the loss of energy in the form of heat to the surroundings (apparatus and the system).
The heat gained can be quantitatively analysed and measured provided no product escapes the system and it is numerically equal to the amount of heat lost by the reaction.
Answer:
Impulse in the first collision is greater
Explanation:
u = Initial velocity of cart
v = Final velocity of cart
m = Mass of of cart
First collision
Impulse
Second collision
Impulse
Hence, the impulse in the first collision is greater than the second impact
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Answer:
Acceleration, 
Explanation:
Given that,
Speed of pilot, v = 475 m/s
Radius of the circle, r = 2310 m
If the pilot is moving in a circular path, it will experience a centripetal acceleration. It is given by the formula as :
So, the acceleration experienced by a pilot flying in a circle is 
. Hence, this is the required solution.
