The problem wants to compute how long does it take for the acceleration to occur if a car travelling at 7m/s accelerates uniformally at 2.5 m/s^2 to reach a speed of 12 m/s and base on that, the time duration would be 2 seconds. I hope this would help
<span>the speed of something in a given direction. so i think none of these</span>
Answer:
The object with the greatest acceleration is the one with the mass of 5 kg. Option A
Explanation:
The conclusion is easy for getting because we can use all the given options in the equation of newton for the mass, the force, and the acceleration. We can all the results in the attached image.
Note: We can realize that for a given force, while the mass of the object is less it will be more easy to accelerate it.
Because of the earth's large mass and solid structure, the skier moves but the earth does not.
<h3>Why can't the earth be moved?</h3>
- Because the Earth is such a massive body, it cannot be moved by applying force to it. Because it cannot be moved with a small amount of force
- The amount of matter contained in an object is what gives it inertia, or the tendency of matter to remain at rest if at rest, or to continue moving in the same direction at the same speed if moving.
- The greater an object's mass, the greater its gravitational force.
- Mass is the quantity that is solely determined by an object's inertia. The greater an object's inertia, the greater its mass.
- A heavier object is more likely to resist changes in its state of motion.
- we can conclude that the skier moves but the earth does not due to the large mass of the earth and its solid structure.
To learn more about earth refer to :
brainly.com/question/25624188
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Answer:
T= 6.28fR²/µg
Explanation:
a=µg/R
(v-vi)/(t-ti)= µg/R
v: linear velocity of turntable at which coin begins to slip
vi: initial velocity
t: time at which coin begins to slide
ti: time at which turntable started moving
(v-0)/T=µg/R
T=Rv/µg
to find v,
v= wR
here, w is angular velocity and is equal to 2πf where f is frequency of turntable rotation
v= 2πfR
so,
T= R (6.28fR)/µg
T= 6.28fR²/µg
