Bullet of mass embeds itself in a
wooden block with mass which then compresses a spring by a distance
before coming to rest. the coefficient of kinetic friction
between the block and table is (a) what is the
initial velocity (assumed horizontal) of the bullet? (b) what
fraction of the bullet’s initial kinetic energy is dissipated
(in damage to the wooden block, rising temperature, etc.)
in the collision between the bullet and the block?
water, if this were to occur u would want to immediately wash it with well water.
reason: strong bases react with the oils in your skin to produce a soapy feeling layer. rinse until well after that feeling is gone.
-5, 5 hope this is right
two keys are needed to solve this problem. first, the conservation of momentum: allowing you to calculate the cart's speed after the elephant jumped onto it. it holds that:
so, once loaded with an elephant, the cart was moving with a speed of 4.29m/s.
the second key is the kinematic equation for accelerated motion. there is one force acting on the cart, namely friction. the friction acts in the opposite direction to the horizontal direction of the velocity v0, its magnitude and the corresponding deceleration are:
the kinematic equation describing the decelerated motion is:
it takes 11 seconds for the comical elephant-cart system to come to a halt.
wooden block with mass which then compresses a spring b...