3 years ago

Giving brainliest!! if you answer correctly :) (30pts)

Physics

1 answer:

myrzilka [38]3 years ago

8 0

Answer:

mass = 4kg

Explanation:

Kinetic Energy = 1/2 x m x v²

where m = mass and v = velocity

So,

KE = 50

1/2 × m × 5² = 50

1/2 × m × 25 = 50

m = (50 x 2)/25

m = 100/25

m = 4 kg

You might be interested in

What is the second most abundant element in the universe? <br> a. h <br> b. c <br> c. fe <br> d. he

Andru [333]

D I think I'm not sure!?.

7 0

3 years ago

A car that experiences no frictional force is started and caused to move. For the car to continue in that motion, the gas pedal

astraxan [27]

Explanation:

Gas pedal is not required to used on friction less surface. On a friction less surface once the car is started and caused to move, car continues to move with same velocity as there is no opposing force. Therefore, no pressing of gas pedal required. However, this situation is not possible in real life, as friction is always present.

8 0

3 years ago

A 6.7 kg block is released from rest on a frictionless inclined plane making an angle of 25.7° with the horizontal. Calculate th

yulyashka [42]

Answer:

So time taken by block to travel 0.5 m from rest will be 0.4853 sec

Explanation:

We have given mass of the block m = 6.7 kg

angle of inclination $\Theta =25.7^{\circ}$