The potential energy is -ax. What is the force?(Multiple Choice)A. axB. -aC. -ax2D. -axE. aF. +ax2
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At a lumberjack competition an axe with a mass of 1.25 kg is thrownat a target with a speed of 41 m/s. When it hits the target, itpenetrates to a depth of 0.055 m.(a) What was the average force exerted by the target on theaxe?1 N(b) If the mass of the axe is halved, and the force exerted by thetarget on the axe remains the same, by what multiplicative factordoes the penetration depth change?It doubles. It increases by a factor of the square root of two. Itdoes not change. It decreases by a factor of the square root oftwo. It halves.
The potential energy of a mass m attached to a spring is (1/2) kx2. What is the force?(multiple choice)A. k x3/6B. -k x3/6C. +1/2 k x2D. kxE. -kxF. -1/2 k x2
At a lumberjack competition an axe with a mass of 1.25 kg is thrownat a target with a speed of 43 m/s. When it hits the target, itpenetrates to a depth of 0.047 m.(a) What was the average force exerted by the target on theaxe?