You expend 1000 w of power moving a piano 10 meters in 5 seconds. how much force do you exert a. 50 n b. 50000 n c.250 n d. 500 n apex please
<em>P = W/t = (Fxd)/t and rearranging and solving for F, F = (Pxt) / d = (1000x5)/10 = 500 N, choice C.</em>
Acceleration is -7 m/s²
Explanation:
initial velocity (u) = 14 m/s
since it's gonna stop,
final velocity (v) = 0m/s
time taken(t) = 2 seconds
now,
a = (v-u)/t
or, a = (0-14)/2
or, a = -14/2
a = -7m/s²
Answer:
For C is B and for D is A
Explanation:
B because that's where the b car will do all the force to go up, and A because there the car doesn't have to do any force other than the natural, and it already brings that on it's own.
Answer:
d)30,000 N
Explanation:
Solution:
mass(m)=1000kg
initial velocity (u)=0m/s
final velocity (v)=15m/s
So,
acceleration (a)=(v-u)/t
=(15-0)/10
=1.5m/s^2
Atlast,
Force(F)=m×a
=20000×1.5
=30,000 N
There are two ways to find energy. Energy=F*d=mv^2. We can use this relationship to find v: