A car of mass and a truck of mass are each to be accelerated uniformly from rest to in .

PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A car of mass 1.2×103 kg1.2\times10^{3}\,\text{kg} and a truck of mass 1.0×104 kg1.0\times10^{4}\,\text{kg} are each to be accelerated uniformly from rest to 15 m s−115\,\text{m\,s}^{-1} in 10 s10\,\text{s}. (a) Determine the common acceleration produced. (b) Calculate the average force that must act on the car. (c) Calculate the average force that must act on the truck and hence find the ratio of the force on the truck to that on the car.

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