If a force of 10 N acts on an object and an additional force of 6 N acts on the object in the same direction. What will be the net force be on the object? A- 60 N
B- 16 N
C- 6 N
D- 4 N

Use Newton's 2nd law (f=ma) to solve the following problem.

Grady pushed his tennis ball with a mass of 30 kg causing an acceleration of 1 m/s/s. What force is Grady applying?
A- 30 N
B- 30
C- There is no force, the tennis ball did not move
D- 1 N

The answer is mean don't know

Answer i believe its center of gravity

Food, technology, shelter, medication, birth rate increase or decrease.

Question is unclear.found on internet original question: "what should isla write in the areas marked a, b, and c? x-rays, both, radio waves)a: has a longer wavelengthb: travels at the same speedc: has a higher frequencyanswers: a) has a longer wavelength  --> radio waves. in fact, radio waves have wavelength in the range of the meters, while x-rays have wavelengths of a few nanometers.b) travel at the same speed --> both. both radio waves and x-rays are electromagnetic waves, which travel (in vacuum) at the speed of light, c.c) has a higher frequency --> x-rays. in fact, the shorter the wavelength, the higher the frequency. since radio waves have longer wavelength, they have lower frequency, while x-rays frequencies are higher.