A dart is thrown at a target that is supported by a wooden backstop. It strikes the backstop with an initial velocity of 350m/s The dart comes to rest in 0.0050s What is the acceleration of the dart ?
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u=350m/sec
v=0m/sec
t=0.005sec
a=v-u/t
=0-350/0.005
= -350/0.005
= -350×1000/5
= -70×1000
= -70000 m/sec^2
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