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Vlad [161]
3 years ago
13

Potential energy of an apple is 6j. the apple is 3.00m high. what is the mass of the apple?​

Physics
1 answer:
HACTEHA [7]3 years ago
5 0

Answer:

0.2 kg

Explanation:

PE = mgh

6 J = m (9.8 m/s²) (3.00 m)

m = 0.2 kg

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Two football players are running toward each other. One football player has a mass of 105 kg and is running at 8.6 m/s. The othe
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A person rides a bike with a constant velocity of 2 m/s. If his total displacement is 10 meters, for how long was he riding?
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By applying a force of one Newton, one can hold a body of mass _​
SVEN [57.7K]

Answer:

By applying a force of one Newton, one can hold a body of mass of 102 gram.

Explanation:

  • Force is the pull or push of an object. It can be mathematically measured as, F= m* g.

                       where, F= force in newton

                                  m= mass in kg

                                  g= acceleration due to gravity (meter/second^{2} )

  • For 1 newton force,

                                   F= m* 9.8

                            or,   m= \frac{1}{9.8}= 0.102 kg

                            or,   m= 102 gram.

  • Hence, 102 gram mass can be hold by one Newton force.

3 0
3 years ago
A sledge hammer has a mass of 4.0 kg and is moving at a speed of 6.0m/s when it strikes a fence post, driving it 10 cm further i
Afina-wow [57]

Part a)

kinetic energy of the hammer will be

KE = \frac{1}{2} mv^2

here we know that

m = 4 kg

v = 6 m/s

now by the equation of kinetic energy we have

KE = \frac{1}{2}*4 * 6*6

KE = 72 J

Part b)

for finding the force we will have

v_f^2 - v_i^2 = 2 a d

here we know that

v_f = 0

v_i = 6 m/s

d = 10 cm = 0.10 m

now from above equation we have

0 - 6^2 = 2 * a * 0.10

a = -180 m/s^2

now by Newton's II law we have

F = ma

F = 4*180 = 720 N

so it requires 720 N.

8 0
3 years ago
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