What is the velocity of a bobsled that travels 100 meters in 8.9 seconds in m/s

Physics

1 answer:

mart [117]3 years ago

7 0

Answer:

11.2 m/s

Explanation:

Average velocity = displacement / time

v = 100 m / 8.9 s

v = 11.2 m/s

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What would happen if you charged a balloon by

Luda [366]

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3 years ago

A car slams on the brakes to stop. The road pushes back up on the car with a normal force of 12,750 N and friction from the brak

ivann1987 [24]

Answer:

$\displaystyle \mu_d=0.75$

Explanation:

Coefficients of Friction

Objects in physical contact produce friction which usually manifests as thermal energy being dissipated in the surface where the objects are interacting. It's usually harder to start to move an object from rest, that keeps moving it at a constant speed on the same surface. That is why there are two different coefficients of friction: the static and the dynamic. As mentioned, the static coefficient $\mu_s$ is greater than the dynamic coefficient $\mu_d$ . The car is already moving and is attempting to stop. The coefficient of friction is defined as