Physics question and answers for May 30, 2024
- Q Two students were climbing stairs at school. Student 1 has a weight of 700 N. Student 2 has a weight of 560 N. If Student 1 climbed the stairs in...
- Q A 1.45 kg plastic ball is rolling forward at 1.14 m/s. It collides with a second plastic ball of mass 0.94 kg, also rolling forward at 0.47 m/s. After the...
- Q A rifle can shoot a 4.2 g bullet at a speed of 965 m/s. Find the kinetic energy of the bullet. What work is done if the bullet starts from...
- Q A force of 22 N is exerted horizontally on an 18 kg box to move it 7.6 m across the floor. If the box was initially at rest and is...
- Q A 0.280 kg block on a vertical spring with a spring constant of 4.66 x 10^3 N/m is pushed downward, compressing the spring 0.0700 m. When released, the block leaves...
- Q A 97.6 N sack of grain is hoisted to a storageroom 51 m above the ground floor of a grainelevator.How much work was required?Answer in units of J.part 2 of...
- Q Steam to drive an old-fashioned steam locomotive is supplied at a constant gauge pressure of 1.75*106 N/m (about 250 psi) to a piston with a 0.200-m radius. (a) By calculating...
- Q A 0.0300-kg bullet is fired vertically at 200.0 m/s into a 0.159-kg baseball that is initially at rest. The bullet lodges in the baseball and, after the collision, the baseball/bullet...
- Q You use 15 N of force to lift a 2 kg box, then carry the box across a 10 m room. You don't raise or lower the box as you...
- Q Dasher and Dancer use 1,398 N of force to pull Santa's sleigh out of the barn, traveling 7.9 meters. If it takes 27.6 seconds, how many watts of power are...
- Q A pole-vaulter of mass 60.0 kg vaults to a height of 8.10 m before dropping to thick padding placedbelow to cushion her fall.What is the speed with which she lands...
- Q Santa's elf needs to move a gift box 6 meters across the room, then 0.5 meters up onto a shelf. Which of the following would require the MOST amount of...
- Q A basketball of mass 0.62 kg starts rolling down an incline with an initial velocity of 0.45 m/s. After rolling to the bottom of the incline, you measure the speed...
- Q While decorating, your friend drops a holiday ornament. (Oh no!) Explain using the concepts of impulse and momentum why the ornament is more likely to survive the collision with the...
- Q A 52.7 kg student walks up a flight of stairs in 3.88 seconds, traveling a total of 3.1 meters. How many watts of power are generated by the student?*use 10...
- Q Dizzy is speeding along at 24.8 m/s as she approaches the level section of track near the loading dock of the Whizzer roller coaster ride.A braking system abruptly brings the...
- Q The length of nylon rope from which a mountain climber is suspended has a force constant of 1.3810^4 N/m. Given his mass plus the mass of his equipment are 94.3...
- Q A 1.05 kg book falls off a shelf that is 1.16 m high. What is the book's kinetic energy just as it hits the ground?Remember that PE top = KEbottom*Remember...
- Q A 2.00 kg ball is thrown upward at some unknown angle from the top of a 20.0 m high building. If the initial magnitude of the velocity of the ball...
- Q Gravitational potential energy of an object that is lifted off the ground is equal to: (choose all that apply)A. the object's mass times gravity times its height off the groundB....
- Q A ball with mass 0.885 kg and speed 3.9 m/s rolls across a level table into an open box with mass 0.769 kg. The box with the ball inside it...
- Q A flower vase sits on a high shelf. If the vase were to fall off the shelf, which of the following statements would be true as it falls? Choose all...
- Q The law of conservation of energy states that -A. Potential energy is always greater than kinetic energy.B. The total energy of a system is constant.C. Potential and kinetic energy are...
- Q Your class is asked to plan an investigation to demonstrate the conservation of energy. Two groups each wrote their own plan.We will use a battery powered toy car to demonstrate...
- Q James uses a rope to lift supplies weighing 400 N to his tree-house. It takes 5 seconds to lift them to a height of 2 meters. Calculate how much work...
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