Physics help! I really need this homework done:
1 answer:
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Answer:
option A
Explanation:
given,
For exerted by the worker = 245 N
angle made with horizontal = 55°
we need to calculate Force which is not used to move the crate = ?
Movement of crate is due to the horizontal component of the force.
Crate will not move due to vertical force acting on the it.
hence, worker's force not used to move the crate is equal to 200.69
The correct answer is option A
Explanation:
m = 7.3kg
u = 0
v = 14m/s
t = 1.5sec
P = (0.5×7.3×14²) ÷ 1.5
P = 476.93
P = 477 watt