Physics, 03.04.2021 17:40 ronaldhernandez598

Rey lifts a 6,300 g metal ball from the ground to a height of 98.15 cm close to his body. (a) What is the balls PEg? Realizing that the ball is heavy, he suddenly releases it with a speed of 15m/sa. (b) what is the balls KE? Given:
m= 6,300 g =6.3 kg
h= 98.15 cm =0.9815 m

Formula:
a) PE= mgh
PE=
PE=

[v= 15 m/s]
b) KE= mv²/2
KE=
KE=

Answers: 1

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 03:30, sere50

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

Answers: 3

continue

Physics, 22.06.2019 05:00, damientran

The image below shows numerous volcanic mountains in the pacific northwest. what is the most likely cause of the volcanic and earthquake activity in this region?

Answers: 2

continue

Physics, 22.06.2019 14:10, nikki4367

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

Answers: 3

continue

Physics, 22.06.2019 16:30, xxaurorabluexx

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

continue

You know the right answer?

Rey lifts a 6,300 g metal ball from the ground to a height of 98.15 cm close to his body. (a) What i...