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.
HI
Related Physics IB answers
All answers ▸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.
A ball is thrown at a speed of 15m/s at a 30 degree angle from the floor, how far does this ball travel before hitting the ground? (Air resistance can be ignored)
When a hailstone of 0 C falls towards the earth, the kinetic energy of the hailstone is transferred to thermal energy in the ice. What is the minimum speed so that it just melts when it hits the surface. The latent heat of fusion of ice is 340 kJ/kg.
Outline why a given mass of water has more internal energy than the same mass of ice at the same pressure?