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natita [175]
3 years ago
8

Your 5th-grade brother keeps telling you that speed and velocity are the same

Physics
1 answer:
ivanzaharov [21]3 years ago
7 0

Answer:

Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.

<u>please mark as brainly</u>

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You push on a cart (18.0kg) at a 30 degree below horizontal angle. The coefficient of kinetic friction between the chair and the
podryga [215]

Given that force is applied at an angle of 30 degree below the horizontal

So let say force applied if F

now its two components are given as

F_x = Fcos30


F_y = Fsin30


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N = Fsin30 + mg

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F_f = \mu N

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now if cart moves with constant speed then net force on cart must be zero

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8 0
3 years ago
A race car moving along a circular track has a centripetal acceleration of 15.4 m/s? If the car has
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Answer:

r = 58.44 [m]

Explanation:

To solve this problem we must use the following equation that relates the centripetal acceleration with the tangential velocity and the radius of rotation.

a = v²/r

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r = v²/a

r = 30²/15.4

r = 58.44 [m]

3 0
3 years ago
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