Physics, 25.03.2020 05:51 tmanpierce
Two velcro-covered pucks slide across the ice, collide and stick to one another. Their interaction with the ice is frictionless. Puck A is moving to the right at 6 m/s. Puck B has twice the mass as the first puck and is also moving to the right, but at a slower speed of 2 m/s.
1. Kinetic energy is conserved in the collision.
a. True
b. False
2. Puck B will increase its speed after the collision.
a. True
b. False
3. Puck A will increase its speed after the collision.
a. True
b. False
4. Momentum is conserved in the collision.
a. True
b. False
Answers: 2
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An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?
Answers: 1
Physics, 22.06.2019 16:50, Walkman2092
Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.
Answers: 2
Physics, 22.06.2019 23:00, maddie6825
1700 j of energy is lost from 0.14 kg object , the temperature decreases from 50°c to 45°c what is the specific heat of this object, amd what is the material ?
Answers: 1
Two velcro-covered pucks slide across the ice, collide and stick to one another. Their interaction w...
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