3 years ago

Identify the forces acting on the cars and explain why the cars do not slide down the hill

1 answer:

5 0

Examples of outside forces acting on a car is gravity, wind, and other cars. Cars do not slide down hills because their weight, combined with the friction of their tires against the road, hold them in place.

You might be interested in

A squirrel drops an acorn from a tree. Starting from rest, it reaches the ground 22.0 meters

Llana [10]

Does it not tell you how long it took it to reach the ground? Constant Velocity should be distance over time

7 0

3 years ago

Suppose astronomers find an earthlike planet that is twice the size of Earth (that is, its radius is twice the radius of Earth).

JulijaS [17]

Answer:

4 times the mass of Earth

Explanation:

$M_1$ = Mass of Earth

$M_2$ = Mass of the other planet

r = Radius of Earth

2r = Radius of the other planet

m = Mass of object

The force of gravity on an object on Earth is

$F=\frac{GM_1m}{r^2}$

The force of gravity on an object on the other planet is

$F=\frac{GM_2m}{(2r)^2}$

As the forces are equal

$\frac{GM_1m}{r^2}=\frac{GM_2m}{(2r)^2}\\\Rightarrow M_1=\frac{M_2}{4}\\\Rightarrow M_2=4M_1$

So, the other planet would have 4 times the mass of Earth

6 0

3 years ago

Aspect ratio is the ratio of images width to its height. a photograph is 17.5 cm wide by 14 cm high what is the aspect ratio in

Svet_ta [14]

Try 5:4 and see if it is correct

5 0

3 years ago

What is nuclear energy?

____ [38]

Answer: D. Energy released from atoms.

7 0

3 years ago

The same book is placed on a table .9m high. What type of energy does it have and how much?

Lina20 [59]

mass (m)= 5 kg

height (h)= 9m

gravity (g)= 9.8 m/s^2

It has Potential energy. (PE)

• PE = mgh

Replacing:

PE = 5 * 9.8 * 9 = 441 Joules

6 0

11 months ago