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statuscvo [17]
3 years ago
14

Calculating Mass from Potential Energy A skier with a potential energy of 137,200 J waits on top of a ski jump that is 200 m hig

h. What is the mass of the skier? 20 kg 70 kg
Physics
2 answers:
IrinaVladis [17]3 years ago
6 0
Given:\\E_p=137200J\\g=9,8 \frac{m}{s^2} \\h=200m\\\\Find:\\m=?\\\\Solution:\\\\E_p=mgh\;\;\;/:gh\\\\m= \frac{E_p}{gh} \\\\m= \frac{137200J}{9,8 \frac{m}{s^2}\cdot 200m} =70kg
IrinaK [193]3 years ago
6 0

Answer:70k

Explanation:

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3 years ago
1. Impulse is the product of force and distance. True or false?
daser333 [38]

Answer:

Explanation:

1. Impulse, I = F.t

  The statement impulse is the product of Force and distance is false.

2. F = m g

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   statement 2 is false.

3. Joule is equal to Newton times meter.

    Statement 3 is false.

4. Work done to lift an object is correct statement.

   Statement 4 is true.

5. Kinetic energy of an object is due to motion.

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6. Stopping distance is directly proportional to the square of velocity.

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8 0
3 years ago
T-Joe (65 kg) is running at 3 m/s. T-Brud (50 kg) is running at 4 m/s. What would be T-Joe's momentum?
Debora [2.8K]

Answer:

P_J=195N

Explanation:

From the question we are told that

Mass\ of T-joe\ M_J=65\\Velocity\ of T-joe\ V_J=3m/s\\Mass of\ T-Brud\ M_B=50kg\\Velocity\ of T-Brud\ V_B=3m/s\\

Generally the equation for momentum is mathematically given by

P=mv

Therefore

T-Joe momentum P_J

P_J=65*3

P_J=195N

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