Physics, 02.12.2019 05:31, mercedesamatap21hx0
a toy car has an initial acceleration of 2 m/s" across a horizontal surface after it is released from rest. after the car travels for a timet
consisting of only the car an open system or a closed system, and why?
open system because the acceleration of the car is not constant.
open system, because an external force is applied to the car that causes it to accelerate.
closed system, because the speed of the car is as expected in the case where an object has uniform acceleration for a timet
closed system because mechanical energy was not removed from the system as a result of a net force
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7: 53 pm
12/11/2019
Answers: 2
Physics, 21.06.2019 14:40, cheerthi16
A50.0-n box is sliding on a rough horizontal floor, and the only horizontal force acting on it is friction. you observe that at one instant the box is sliding to the right at and that it stops in 2.25 s with uniform acceleration. what magnitude force does friction exert on this box
Answers: 1
Physics, 22.06.2019 12:40, live4dramaoy0yf9
Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)
Answers: 2
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