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kiruha [24]
3 years ago
5

A car of mass 500 kg is moving at a speed of 1.2 m/s. A man pushes the car,

Physics
1 answer:
rusak2 [61]3 years ago
6 0
The answer is D I’m not really sure yet
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a 1811kg car speeds up from rest when a traffic light turns green until it reaches a speed of 23m/s. how much work was done on t
sattari [20]

Answer:

The work done by the frictional force, W = 612565.32 J

Explanation:

Given data,

The mass of the car, m = 1811 kg

The initial velocity of the car, u = 0 m/s

The final velocity of the car, v = 23 m/s

Let the time period of the car be, t = 3 s

The acceleration of the car,

                              a = (v-u) /t

                                 = (23 - 0)/ 3

                                = 7.67 m/s²

The normal force acting on the car,

                         F = mg

                             = 1811 kg x 9.8 m/s²

                              = 17747.8 N

The displacement of the car,

                             s = ut + ½ at²

                                 = 0 + ½ x 7.67 x 3²

                                 = 54.52 m

The work done by the frictional force,

                              W = F · S

                              W = 17747.8 N x 54.52 m

                                   = 612565.32 J

Hence, the work done by the frictional force, W = 612565.32 J

3 0
3 years ago
The derived unit for pressure​
olga2289 [7]

Answer:

pascal

Explanation:

7 0
3 years ago
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How is the way that allows us to listen to an AM/FM Radio in our car is different from the wave that allows us to listen to mu
SVETLANKA909090 [29]

Answer:

Well AM/Fm is digitally using soundwaves for cars through signal, which we cant hear without one (radio). Concerts are in real life and use wavelegnths that we hear because it bounces off overytihing.

Explanation:

4 0
2 years ago
IF a car trip 400 km in four hours what is the rate of speed that a car is traveling?
Andreas93 [3]

Speed = Distance/ Time

Speed = 400 / 4

Speed = 100 km/hr.

100 km per hour.
8 0
2 years ago
if you were floating in the solar system at equal distances between mars (small mass) and jupiter (large mass) which planet woul
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You would gravitate towards Jupiter because if it’s large mass it has a stronger gravitational pull
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