Two small trolleys A and B move on a frictionless horizontal track in the same…
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Two small trolleys A and B move on a frictionless horizontal track in the same straight line.
Initial data:
• Trolley A: mass 5 kg, speed 4 m/s
• Trolley B: speed 2.5 m/s, mass unknown
The magnitudes of their momenta are equal.
(i) Calculate the mass of trolley B.
(ii) Both trolleys are brought to rest by the same constant opposing force acting for 2 s. Determine the magnitude of this force.
(iii) Which trolley experiences the larger magnitude of deceleration? Justify mathematically.