The momentum change of an object is equal to the:
a. object's mass times the force acting on it.
b. impulse acting on it.
c. velocity change of the object.
d. force acting on it.
An unfortunate bug splatters against the windshield of an RV. Compared to the change in momentum of the RV, the impulse of the bug is:
a. larger
b.smaller
c. the same
What is the unit of Potential Energy?
A hotdog salesperson is selling hotdogs on a hill when his 300 kg cart begins to roll down the hill. The height of the hill is 50 m.
Calculate how fast the cart is traveling at the bottom of the hill.Help! Physics review.?
The momentum change of an object is equal to the:
a. object's mass times the force acting on it.
b. impulse acting on it.
c. velocity change of the object.
d. force acting on it.
Momentum is velocity times mass.
An unfortunate bug splatters against the windshield of an RV. Compared to the change in momentum of the RV, the impulse of the bug is:
b.smaller
What is the unit of Potential Energy?
Unit of energy is the Joule, and this is for any kind of energy or work.
A hotdog salesperson is selling hotdogs on a hill when his 300 kg cart begins to roll down the hill. The height of the hill is 50 m.
Calculate how fast the cart is traveling at the bottom of the hill.
300kg is 300*9.8 = 2,940 newton
Energy gained is 2940*50 = 147000 joules
This can be expressed as kinetic energy or
E = 陆mV虏
147000 = 陆300V虏
147000 = 150V虏
V虏 = 980
V = 31.3 m/s
