8107 N
Activity 4:
A boy of mass 55 kg is travelling at 6m-s 'on a skateboard of mass 1 kg, wh...
Physics, 20.05.2021 01:00 SophieCasey
8107 N
Activity 4:
A boy of mass 55 kg is travelling at 6m-s 'on a skateboard of mass 1 kg, when he reaches a
ramp of length 8m, he keeps moving and reaches the top of the ramp with velocity of 1 ms
The
constant friction that he experiences is 6 N.
8 m
4.1 Explain whether his mechanical energy is conserved or not
4.2. Calculate the kinetic energy of the boy when reaches the ramp.
4.3. Calculate the height of the ramp.โ
Answers: 3
Physics, 22.06.2019 10:30
You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?
Answers: 2
Physics, 22.06.2019 11:50
The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r ร f) ยท n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, โ5, 4] n, r = [โ3, 5, 2] m, and n = [6, 5, โ7].
Answers: 3
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