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anyanavicka [17]
3 years ago
7

The releasing of an object from certain height to ground due to gravity is called____ A, Free falling B, Projectile C, curved li

near D,para pola​
Physics
1 answer:
MArishka [77]3 years ago
7 0

Answer:

projectile

Explanation:

when an object is released from certain height to ground due to gravity is called projectile

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Which of the following is true regarding the Earth's mantle?
Brilliant_brown [7]
B) It’s material moves due to convection currents.
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3 years ago
Define these terms about speed and state their units<br> speed​<br>distance covered<br>time taken
Neporo4naja [7]

Explanation:

Speed is the rate of change of distance with time. It is a scalar quantity with magnitude both no direction.

  Speed  = \frac{distance}{time}

The unit is m/s or km/hr or mile/hr

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Time taken is the duration of an event.

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4 0
3 years ago
A 1100 kg sports car accelerates from 0m/s to 32m/s in 10 seconds. What is the average power of the engine?
timurjin [86]

Answer:

The average power of the engine of the sports car is 56.32 kW

Explanation:

Given;

mass of the sports car, m = 1100 kg

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

final velocity of the sports car, v = 32 m/s

time of motion, t = 10 s

The kinetic energy of the car is given by;

K.E = ¹/₂m(v² - u²)

K.E = ¹/₂mv²

K.E = ¹/₂ x 1100 x 32²

K.E = 563200 J

The average power of the engine of the sports car is given by;

Pavg = Energy / time

Pavg = 563200 / 10

Pavg = 56320 W

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Therefore, the average power of the engine of the sports car is 56.32 kW

8 0
3 years ago
A hi-lo lifts an 25 N skid to top of a pallet rack. The pallet rack is 3.6 meters tall. The hi-lo takes 12 seconds to get the sk
mojhsa [17]

Answer:

7.5Watts

Explanation:

Given parameters:

Force of lift  = 25N

Height  = 3.6m

Time  = 12s

Unknown:

Power output  = ?

Solution:

Power is the rate at which work is done ;

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   Power  = \frac{25 x 3.6}{12}    = 7.5Watts

8 0
3 years ago
What is the kinetic energy of a ball at rest with a mass of 10 Kg?
xxTIMURxx [149]

Answer:

B 0j

Explanation:

It is at rest, not moving

8 0
3 years ago
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