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Fudgin [204]
3 years ago
14

Calculate kinetic energy of a 1.2 kg cart moving at 20.0 m/s.

Physics
1 answer:
Finger [1]3 years ago
4 0

Answer:

240 J :)

Explanation:

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A car is rounding a 100-m-radius curve at 25 m/s.What is the minimum possible coefficient of static friction between the tires a
Crazy boy [7]

Answer:

The minimum possible coefficient of static friction between the tires and the ground is 0.64.

Explanation:

if the μ is the coefficient of static friction and R is radius of the curve and v is the speed of the car then, one thing we know is that along the curve, the frictional force, f will be equal to the centripedal force, Fc and this relation is :

Fc = f

m×(v^2)/(R) = μ×m×g

    (v^2)/(R) = g×μ

               μ = (v^2)/(R×g)

                  =  ((25)^2)/((100)×(9.8))

                  = 0.64

Therefore, the minimum possible coefficient of static friction between the tires and the ground is 0.64.

4 0
3 years ago
Although all sports require a person to be in shape to some degree, some
Alexandra [31]

Answer:

Chess

Explanation:

Chess is considered a sport

3 0
3 years ago
Calculate the displacement of an object at 2.0 seconds when thrown straight up with an
Licemer1 [7]

Answer:

<h3>30m</h3>

Explanation:

Velocity is the change of rate of displacement with respect to time.

velocity = displacement/time

Given

initial velocity = 15 m/s.

time taken =2 secs

Required

Displacement of the object

From the formula;

Displacement = Velocity * time

Displacement = 15 * 2

Displacement = 30m

<em>Hence the displacement of the object is 30m</em>

8 0
3 years ago
2. Suppose that the hanging mass is 120g. Calculate the net force on the system.​
Setler79 [48]

1g=1000kg

120*1000

=120000kg

120000kg*10N/kg

=1200000N

5 0
3 years ago
An object of mass 0.93 kg is initially at rest. When a force acts on it for 2.9 ms it acquires a speed of 16.9 m/s. Find the mag
natulia [17]
Use force equals mass times change in speed divided by time taken which is Newton’s second law.
7 0
4 years ago
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