C) alternately increase and decrease
Solving for acceleration:
F = ma
10000 = 2000*a
a = 5 m/s^2
Solving for velocity:
Vf = Vi + a(t)
0 = Vi - (5)(6)
Vi = 30 m/s
Solving for displacement or distance:
S = Vi*t - 1/2 * a * t^2
S = 30(6) - 1/2 (5)(6)^2
S = 90m
The car would have traveled 90m before coming to rest.
Answer:
The expression of x=4t+2t^2
Where x is distance and t=time
What is displecement?
It could prevent the key from sinking because the wood would float.
It floats because it weighs less than amount of water it would have to push out of the glass if it sank. Wood, cork, and ice are all less dense than water, and they float; rocks are more dense, so they sink. A key would also be more dense causing it to sink.
Hope this helps,
Davinia.
The answer on the question given is letter B.Momentum is a vector quantity and kinetic energy is a scalar quantity.
