Question

QUESTION 4 The total kinetic energy, in kJ, of an object whose mass is 100kg and whose velocity is 20m/s is 80kJ 60kJ 40kJ 20
0 0
Add a comment Improve this question Transcribed image text
Answer #1

m= 100 kg

v= 20 m/s

total kinetic energy = (1/2)mv2 = (1/2) *100*(20)2 = 20000 J = 20 KJ

Add a comment
Know the answer?
Add Answer to:
QUESTION 4 The total kinetic energy, in kJ, of an object whose mass is 100kg and...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • We learned in class that the kinetic energy (KE) of an object with mass m moving...

    We learned in class that the kinetic energy (KE) of an object with mass m moving at velocity v is KE =½ m v^2. Accordingly, the kinetic energy (KE) per unit mass (m) of a body moving at velocity v is KE/m=v^2 /2. What is the asteroid’s kinetic energy per unit mass (J/kg) for an impact at this velocity? State your answer in units of J/kg. velocity is 29.8 km/s

  • 1. Calculate the kinetic energy of a person whose mass is 59.0 kg and is moving...

    1. Calculate the kinetic energy of a person whose mass is 59.0 kg and is moving with a velocity of 26.5 m/s. 8 points 2. Define first law of thermodynamics. 4 points 3. How much heat could you obtain from 10.0 g of methane, CHa, assuming you have excess of oxygen. The thermochemical equation is given. CHA (6) + 20€) → CO2(g) + 2 H20 (0); AH = -890.3 kJ 10 points

  • Momentum and kinetic energy are both calculated from the mass and velocity of an object. If...

    Momentum and kinetic energy are both calculated from the mass and velocity of an object. If mass is conserved during a collision, explain how momentum may be conserved but not kinetic energy.

  • The kinetic energy, KE, for an object of mass m, moving at velocity v is represented...

    The kinetic energy, KE, for an object of mass m, moving at velocity v is represented with the equation KE is equal to (1/2)(mass)(velocity)^2 Write the kinetic energy equation using a mathematical equation. Include: • The symbols for mass and velocity. • The Math Equation Function to write 1/2 in the fraction format. • Use the superscript format to write (velocity)^2.

  • An object of mass 4 kg is moving in a straight line with kinetic energy 106.58...

    An object of mass 4 kg is moving in a straight line with kinetic energy 106.58 J. A force is applied in the direction of its motion for 2.7 seconds, and as a result, its kinetic energy is multiplied by a factor of 1.78. a) By what factor is its momentum multiplied? b) What was the magnitude of the force applied to the object? c) Instead of this force, if a force of the same magnitude is applied to the...

  • 1. How much kinetic energy does an object of mass m traveling with a velocity vx...

    1. How much kinetic energy does an object of mass m traveling with a velocity vx in the x-direction have? 2. How much kinetic energy does an object of mass m traveling with a velocity ~v = vx ˆi + vy ˆj have? 3. Since the pythagorean theorem states that v ^2 = v ^2 x + v ^2 y , we can write the kinetic energy as K = 1/2mv^2 x + 1/2mv^2 y . Does this mean that...

  • Find the uncertainty in kinetic energy. Kinetic energy depends on mass and velocity according to this...

    Find the uncertainty in kinetic energy. Kinetic energy depends on mass and velocity according to this function E(m,v) = 1/2 m v2. Your measured mass and velocity have the following uncertainties Sm= 1.49 kg and Sv= 2.31 m/s. What is is the uncertainty in energy, SE , if the measured mass, m = 2.3 kg and the measured velocity, v = 13.42 m/s? Units are not needed in your answer. Find the uncertainty in kinetic energy. Kinetic energy depends on...

  • Question 19 The kinetic energy of a cart with a mass of 400 g moving in...

    Question 19 The kinetic energy of a cart with a mass of 400 g moving in a straight line with a velocity of 20 cm/s is 0.08 ) 4) 0.020) 4000) 0.008)

  • a In mechanics, the energy of a moving body is called kinetic energy. If an object...

    a In mechanics, the energy of a moving body is called kinetic energy. If an object of mass (kilograms) is moving with a velocity v (meters per second), then the kinetic energy k( joules) is given by the equation ke we model the mass and inputs to a system (moving body) and the energy as output, then obnerve the system for while and deduce the following two rules of inference based on our observations Rule 1: IF x is small...

  • The energy of motion is called: Kinetic energy. potential energy, inertial energy. Power. In an inelastic...

    The energy of motion is called: Kinetic energy. potential energy, inertial energy. Power. In an inelastic collision: momentum is conserved. kinetic energy is conserved, both (a) and (b). If the velocity of a moving object is doubled and its mass is cut in half, the kinetic energy of the object is; remains the same, doubled quadrupled, cut in half. When the net work done on an object is speed of the object is me on an object is zero; the...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT