1 answer:
Answer:
2.55sec
Explanation:
time = distance/speed = (87 m)/(34 m/s) = 2.55sec
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Work= Force x Distance
Answer: 7500 Joules
Answer:
2.1km
Explanation:
Ill take it as u are talking about the displacement
Since displacement has negatives and positves
5.9 - 3.8 = 2.1km
Answer:
KE = 1/2 * m * 
Explanation:
use the formula:
KE = 1/2 * m *
KE = kinetic energy in joules (J)
m = mass in kg
v = velocity in m/s
Answer:
<u>20 m/s</u>
Explanation:
<u>Given</u>
- u(A) = 20 m/s
- u(B) = 30 m/s
- acceleration equal in magnitude but opposite in direction
<u>Solving</u>
- Velocity of A at Q = 30 m/s
- From, P to Q, <u>Δv(A) = 30 - 20 = +10 m/s</u>
- Therefore, velocity of B at Q will be decreased by 10 as it is equal in magnitude but opposite in direction to A
- Δv(B) = v(B at Q) - u(B at P)
- -10 m/s = v(B at Q) - 30 m/s
- v(B at Q) = 30 - 10 = <u>20 m/s</u>
Answer:
Explanation:I don't say you have to mark my ans as brainliest but if you think it has really helped you plz don't forget to thank me ...
