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noname [10]
4 years ago
9

A ball rolled along a horizontal surface maintains a constant speed because

Physics
2 answers:
Oksi-84 [34.3K]4 years ago
7 0
There is no friction witch is impossible but good question.
leva [86]4 years ago
3 0
Gravity is in the vertical direction, so there's no horizontal force on the ball to rob kinetic energy from it. (except friction with the floor and the air ...)
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Robin is standing terrified at the end of a diving board, which is high above the water. If Robin has a mass of 76 kg and is sta
masya89 [10]

Answer:

 Torque = 1191.68 N-m

Explanation:

Given data

mass m = 76 kg

standingdistance r  = 1.6 m

Solution

we get here torque  that si express as

torque  = force × distance ................1

torque  = r × F sin(theta)

and we know that

F = mg   .........2

and g = 9.8 m/s²

put here value in equation 1 we get

Torque = 76 × 1.6 × 9.8 × sin(90)

 Torque = 1191.68 N-m

5 0
3 years ago
Pls help i will give u brainliest!
Vesna [10]

Answer:

the answer is d. 12 protons and no electrons

Explanation:

For Mg atom the atomic number, Z=12

Number of protons in the nucleus = Atomic number of an atom =12

3 0
3 years ago
A snail con move at 3cm/s if it’s ke is 300joules what it it’s mass?
ch4aika [34]

Answer:

Explanation:  V = 3 cm/s = 0.03 m/s

                  BY THE FORmULA OF  K.E

                      K.E = 1/2 mV^2

                     300 =1/2 m (0.03)^2

                     m = 300 x 2/0.0009

                       m= 666666.66kg

4 0
3 years ago
- What is the mass of a bowling ball that weights 80 Newtons on Earth?
ch4aika [34]
I’d say it’s 8 or 80
Hopefully this helps sorry
3 0
3 years ago
Read 2 more answers
(SCIENCE) 22 POINTS AND CROWN ASAP
gayaneshka [121]

Answer:

A or D

Explanation:

Net force includes addition or subtraction.

5 0
3 years ago
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