At a particular instant, a moving object has a kinetic energy of 312 ) and a...
(1) A moving object has a kinetic energy of 119 J and a momentum with magnitude of 28.0 kg·m/s. (a) Determine the mass of the object. ______ kg (b) Determine the speed of the object. ______m/s (2) A 5.1 g dart is fired into a block of wood with a mass of 24.2 g. The wood block is initially at rest on a 1.6 m tall post. After the collision, the wood block and dart land 3.4 m from the...
An object has a kinetic energy of 284 J and a momentum of magnitude 23.5 kg · m/s. (a) Find the speed of the object. m/s (b) Find the mass of the object. kg
An object has a kinetic energy of 254 J and a momentum of magnitude 23.7 kg·m/s. Find the speed and the mass of the object. speed m/s mass kg
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...
(a) Find the linear momentum and kinetic energy of a bullet of mass 4.90 10-2 kg moving at a speed of 315 m/s. linear momentum = kinetic energy = (b) Find the linear momentum and kinetic energy of a football player of mass 110 kg moving at a speed of 10.0 m/s. linear momentum = kinetic energy = (c) Find the linear momentum and kinetic energy of a truck of mass 1.00 104 kg moving at a speed of 20.5...
An object has a kinetic energy of 296 J and a momentum of magnitude 21.3 kg-m/s. Find the speed and the mass of the object. speed m/s mass kg Three carts of masses m_1 = 5.00 kg, m_2 = 9.50 kg, and m_3 = 3.00 kg move on a frictionless, horizontal track with speeds of V_1 = 7.00 m/s to the right, v_2 = 3.00 m/s to the right, and v_3 = 3.50 m/s to the left, as shown below....
Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 0.8 m/s and a mass of 0.53 kg. Cart 2 has a mass of 0.71 kg. (a) If the total momentum of the system is to be zero, what is the initial speed of Cart 2 in meters per second? m/s (b) Does It follow that the kinetic energy of the system is also zero since the momentum of the system is...
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
A particle with kinetic energy equal to 322 J has a momentum of magnitude 29.7 kg · m/s. Calculate the speed (in m/s) and the mass (in kg) of the particle. speed......... m/s mass ........kg
A 0.400 kg hammer is moving horizontally at 7.50 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. (a) Calculate the duration of the impact. (b) What was the average force exerted on the nail? Additional Materials Reading 12. -12 points OSColPhys1 8.P.002.WA. Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 0.8 m/s and a mass of 0.53 kg. Cart 2...