What forces were acting on the objects dropped in the air? What forces act when dropped in a vacuum?

Describe all the ways that newtons laws can apply in a car crash

According to Newton's second law of motion, when the net force on a object is greater than 0, how is its mass related to its acceleration

A busy chipmunk runs back and forth along a straight line of acorns that has been set out between its burrow and a nearby tree. At some instant, it moves with a velocity of - 1.29 m/s-1.29 m/s. Then, 2.91 s2.91 s later, it moves with a velocity of 1.

Light travels through a material at a speed of 2.1 x 108 m/s. What is the index of refraction for the material?

Three liquids are at temperatures of 6 ◦C, 23◦C, and 38◦C, respectively. Equal masses of the first two liquids are mixed, and the equilibrium temperature is 13◦C.

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.