It is almost time for the summer olympics. the olympic hammer throw is a throwing event where the object is to throw a heavy metal ball attached to a wire and handle. the name hammer throw comes from an older contest where men threw a sledge hammer. the hammer have different weights, ranging from 16 pounds down to 8 pounds. imagine there are four hammers to throw: 16, 12, 10, and 8 pounds. if you throw each hammer with the same amount of force, which hammer will move the shortest distance?
a) 8 pounds
b) 10 pounds
c) 12 pounds
d) 16 pounds

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

Aforce of 9.00 newtons acts at an angle of 19.0 to the horizontal. what is its component in the horizontal direction?