Momentum = mv
p = mv
p=950(10)
p=9500 kg m/s
Answer:
The net force is 500N downwards
Explanation:
When Haley is trying to pull an object upward. The below forces are acting on the object.
Fp = 5500N
Fg = 6000N
because the force of gravity is more than the force of the pull.
Fnet = Fg - Fp = 6000N - 5500N = 500N
And, the direction of the resultant force is the direction of the larger force.
Answer:
Vi = 94.64 m/s
Explanation:
I order to find out the initial velocity of the object, we can use third equation of motion:
2ah = Vf² - Vi²
where,
a = acceleration = -9.8 m/s²
h = maximum height covered by object = 460 m - 3 m = 457 m
Vf = Final Velocity = 0 m/s (since, object momentarily stops at highest point)
Vi = Initial Velocity = ?
Therefore,
2(-9.8 m/s²)(457 m) = (0 m/s)² - Vi²
Vi = √8957.2 m²/s²
<u>Vi = 94.64 m/s</u>
You need two of them:
1). <em>Power = (work done) / (time to do the work)</em>
and
2). <em>Work = (force) x (distance)</em>
<u><em>Using the first one:</em></u>
13.3 watts = (work done) / (3 seconds)
Work done = (13.3 watts) x (3 seconds)
Work done = 39.9 joules
<u><em>Using the second one:</em></u>
39.9 joules = (force) x (4 meters)
Force = (39.9 joules) / (4 meters)
<u>Force = 9.975 Newtons</u>
Answer:You need to give more explanation sorry
Explanation: