How do you tackle a general mechanics question?
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always draw free-body diagram. This will clarify the forces that are acting on the object
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Determine whether newton's 1st law or 2nd law that are in play, and use the equations of each.
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If asked about kinematics - related questions, use kinematics equations to answer.
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Related Physics IB answers
All answers ▸A ball of mass m with initial velocity u rebounds from a wall, with final velocity v. Using Newton's laws of motion explain forces acting in the system.
A ball in a room is thrown with a speed v = 15 m/s at an angle 45 degrees above the horizontal. If the ceiling is 4 m high, will the ball hit the ceiling? If so, what is the minimum angle at which the ball will not hit the ceiling? Neglect air resistance.
1 dm^3 of water steam at 200 degrees C, 10 bar enters a compressor. When it leaves, its temperature is 400 deg. C and volume 0.5 dm^3. Calculate the final pressure of steam. Critically discuss the assumptions you made in your calculations.
Why does the temperature of a substance during a phase change stay constant, despite heat being transferred?