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Marina CMI [18]
1 year ago
9

Newton’s cradle is a contraption where metal balls hang from a frame. When one ball is pulled and released, the collision causes

one ball on the opposite end to be released.
Which type of force can decrease the total momentum of this system?

(1 point)
Responses

A friction force
B strong nuclear force
C electrostatic force
D magnetic force
Physics
1 answer:
Marysya12 [62]1 year ago
6 0

Answer: A

Explanation: the principle of friction with swinging and colliding balls.

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What is the car's average velocity (in m/s) in the interval between t = 1.0 s<br> to t = 1.5 s?
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Answer:

1.4 m/s

Explanation:

From the question given above, we obtained the following data:

Initial Displacement (d1) = 0.9 m

Final Displacement (d2) = 1.6 m

Initial time (t1) = 1.5 secs

Final time (t2) = 2 secs

Velocity (v) =..?

The velocity of an object can be defined as the rate of change of the displacement of the object with time. Mathematically, it can be expressed as follow:

Velocity = change of displacement /time

v = Δd / Δt

Thus, with the above formula, we can obtain the velocity of the car as follow:

Initial Displacement (d1) = 0.9 m

Final Displacement (d2) = 1.6 m

Change in displacement (Δd) = d2 – d1 = 1.6 – 0.9

= 0.7 m

Initial time (t1) = 1.5 secs

Final time (t2) = 2 secs

Change in time (Δt) = t2 – t1

= 2 – 1.5

= 0.5 s

Velocity (v) =..?

v = Δd / Δt

v = 0.7/0.5

v = 1.4 m/s

Therefore, the velocity of the car is 1.4 m/s

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