All categories

3 years ago

Which of the following equals the change in velocity divided by the time?

Physics

2 answers:

valina [46]3 years ago

6 0

Answer:

Acceleration.

Explanation:

Hope this helped!

Usimov [2.4K]3 years ago

5 0

Answer:

speed

Explanation:

You might be interested in

Which atom is most likely to accept the electrons to form from an ionic bond

Mekhanik [1.2K]

a nonmetal with the amount of valence electrons that will complete atom

5 0

3 years ago

You want to build a search light. The search light is to have an outgoing parallel beam. You have a small, very bright light (a

andrew11 [14]

Answer:

1 m

Explanation:

Given

The mirror is a concave mirror.

Radius of curvature = 2 m

Now, for a parallel beam after reflection occurs, the object should be placed at the focus of the mirror.

We know, focal length = radius of curvature / 2

= 2 / 2

= 1

Thus the focal length is 1 m.

Hence the object should be placed at 1 m from the concave mirror for parallel beam reflection.

3 0

3 years ago

A crane lifts a car with 9023 J of kinetic energy. The crane lifts the car with a speed

lapo4ka [179]

Answer:

m = 2301.8 [kg]

Explanation:

This problem can be solved in an easy way using the definition of kinetic energy, in this way you can clear the mass, depending on the known variables.

$E_{k}=0.5*m*v^2\\replacing\\\\9023 = 0.5 *m*(2.8)^2\\m = 2301.8[kg]$

4 0

3 years ago

How far does a car in 90 sec if it is traveling at a speed of 55m/s show equation

Mkey [24]

Answer:

4950 meters

Explanation:

Recall that the formula for the speed (v) is given by the quotient of the distance traveled (d) divided by the time (t) it took to cover that distance:

$v=\frac{d}{t}$

Therefore, for this case in which the car travels at 55 m/s for 90 seconds, we can replace these values in the formula, and solve for the distance covered:

$v =\frac{d}{t} \\55 \frac{m}{s} =\frac{d}{90\,s} \\d=55*90 m\\\\d=4950\,m$

5 0

3 years ago

Last one i promise!!

Delvig [45]

Answer:

Explanation:

because when they are in opposite direction we subtract so 10N-10N=0 the second one is in the same direction so we simply add the 2 numbers so 10N+10N=20N the last one is as the same as the first picture we subtract 10N-8N=2N

7 0

2 years ago