Physics, 29.10.2019 21:31 samantha9430
Six dogs pull a two-person sled with a total mass of 220 kg. the coefficient of kinetic friction between the sled and the snow is 0.08. the sled accelerates from rest at 0.75 m/s2 until it reaches a speed of 12 km/h. a) what is the work done by the dogs in the accelerating phase? b) what is the maximum power output by the dogs? c) what is the pulling force from the dogs (assumed to be horizontal)?
Answers: 2
Physics, 22.06.2019 06:00
A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s
Answers: 1
Physics, 22.06.2019 09:20
Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ยฝ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers
Answers: 1
Physics, 22.06.2019 09:30
The graph represents the distance a car travels over time while on the highway. which statement about the car's trip is accurate? a) the car does not move over time. b) the car travels at a constant velocity. c) the car's velocity increases constantly over time. d) the car's velocity decreases constantly over time.
Answers: 1
Six dogs pull a two-person sled with a total mass of 220 kg. the coefficient of kinetic friction bet...
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