Physics, 24.10.2019 16:43 vanvalenpeyt
Gina is driving her car down the street. she has a teddy bear sitting on the back seat. a dog runs in front of gina's car, so she quickly applies the brakes. the force of the brakes causes the car to stop, but the teddy bear continues to move forward until it hits the car's dashboard. the teddy bear did not stop at the same time as the car because a. objects in motion tend to stay in motion unless acted upon by an outside force. b. more force is required to stop softer objects than to stop harder objects. c. only objects touching the earth's surface can be acted upon by an outside force. d. objects in motion can only be stopped by the application of a balanced force.
Answers: 2
Physics, 22.06.2019 10:00, Calirose
Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?
Answers: 2
Physics, 22.06.2019 14:30, sross8799
Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?
Answers: 2
Gina is driving her car down the street. she has a teddy bear sitting on the back seat. a dog runs i...
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