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3 years ago

7. How many seconds would it take a car travelling at 100.0 km/h to travel a distance of 16 m?

Physics

2 answers:

alexira [117]3 years ago

8 0

Answer: 0.58 s

Explanation: Solution attached:

Convert first 100.0 km/h to m/s

100.0 km/h x ( 1000 m / 1 km ) x ( 1h / 3600s ) + 27.8 m/s

Use v= d / t and derive too find t:

t = d / v

= 16 m / 27.8 m/s

= 0.58 s

cancel out meters and the remaining unit is in seconds.

tatiyna3 years ago

5 0

Answer: Time, t = 0.57 seconds

Explanation:

Speed of the car, v = 100 km/h = 27.77 m/s

Distance covered by the car, d = 16 m

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mu = 0.56

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v_o: initial speed in the interval of interest = 60km/h

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x: distance = 25m

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$F_f=ma=(1490kg)(5.55m/s^2)=8271.15N$

Furthermore, you use the relation between the friction force and the friction coefficient:

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A horizontal 2.00\ m2.00 m long, 5.00\ kg5.00 kg uniform beam that lies along the east-west direction is acted on by two forces.

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Answer: $240\ rad/s^2$

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