Answer:
XL sleep usual Addison officer at home and ear is not a short time to be be free and ear is a short time to make a short time
Explanation:
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Answer:
24.5 N
Explanation:
Draw a free body diagram of the picture. There are four forces:
Weight force mg pulling down.
Friction force Nμ pushing up.
Normal force N pushing left.
Applied force F pushing right.
Sum of the forces in the y direction:
∑F = ma
Nμ − mg = 0
N = mg / μ
Sum of the forces in the x direction:
∑F = ma
F − N = 0
F = N
Substitute and solve:
F = mg / μ
F = (1.5 kg) (9.8 m/s²) / (0.6)
F = 24.5 N
Answer:
10.5min
Explanation:
Given parameters:
Distance = 4200m
Speed = 400m/min
Unknown:
Time taken for this run = ?
Solution:
Speed is the distance divided by the time taken.
Speed =
Time =
Now insert the parameters and solve;
Time =
= 10.5min