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3 years ago

A ball is rolling across the floor. Why does the ball come to a stop?

Physics

2 answers:

Kobotan [32]3 years ago

6 0

Answer:

It's C the friction stopped it

Explanation:

Gravity has a little effect on it. However the main force stopping the ball rolling is the friction force of the floor. The ball will stop rolling when the velocity of the ball is the same as the velocity of friction force.

OLEGan [10]3 years ago

3 0

Explanation:

the notmal focrce stopped it.

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3 years ago

A racing car whose mass is 1.2 X 10^3 kg is travelling at 8.9 m/s. It stops with a constant deceleration in a distance of 1.8X10

Alexeev081 [22]

given that initial speed of the car is

$v_i = 8.9 m/s$

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so here we can use kinematics to find the acceleration of car

$v_f^2 - v_i^2 = 2 a d$

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here we have

$- 79.21 = 2*(18)*a$

$a = -2.2 m/s^2$

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$F = ma$

here we have

mass = 1.2 * 10^3 kg

$F_{net} = 1.2 * 10^3 * 2.2$

$F_{net} = 2.64 * 10^3 N$

now we can say

$F_{net} = F_1 + F_2$

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3 years ago

A speeding truck travels in the positive x direction. It hits a car traveling in the positive y direction. The vehicles are defo

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Answer:

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