How do you tackle a general mechanics question?
-
always draw free-body diagram. This will clarify the forces that are acting on the object
-
Determine whether newton's 1st law or 2nd law that are in play, and use the equations of each.
-
If asked about kinematics - related questions, use kinematics equations to answer.
HI
Related Physics IB answers
All answers ▸Explain why increase in current results in higher temperature of the wire.
Use the idea of a thermos flask to explain conduction, convection and radiation. Comment also how a thermos flask can reduce heat loss.
The diagram below represents a balloon just before take-off. The balloon’s basket is attached to the ground by two fixing ropes.Calculate the tension in either of the fixing ropes.
Which unit is equivalent to J kg^-1? a) m s^-1 b) m s^-2 c) m^2 s^-1 d) m^2 s^-2