If you jump a barefooted on a hard surface, your legs get injured. But they are not injured if you jump on a soft surface like sand or pillow. Explain.
force(dt) = impulse
force =impulse/dt 0r m(v-u)/dt
finally body comes to rest in both cases but in hard surface change in momentam occures in a very small time so the force exerted by body is maximum and we get hurted ..........
Three identical balls are placed on a frictionless
horizontal surface touching each other. They stick to
each other because of adhesive. Another ball of same
radius and mass m is placed over the void created by
the three balls. Find the forces applied by the balls
kept on the floor to each other if the system remains
in equilibrium.
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A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.
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31
41
Last Activity: 9 Months ago
Last Activity: 3 Years ago
Last Activity: 3 Years ago
