83. Gravity is activity as a force on the cart.
84. The box has gathered kinetic energy and momentum and will continue going forward.
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Your answer is on the inside bends!
When rocks are deposition on the bottom of the river pressure can cause the rock to break down in sentiments!
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The answer should be B. A half step
The answer would be B the temperature of the juice was the temperature of the surrounding air
Let the rescue boat starts at an angle theta with the North
now its velocity towards East is given as


now in some time "t" it will catch the boy
so we will have

also we have

now we have



by solving above we got
