4 years ago

If a net force of 25 N is exerted over a distance of 4 m to the right on a 2 kg mass initially at rest and moves it, what is

Physics

1 answer:

astra-53 [7]4 years ago

6 0

Answer:

10 m/s

Explanation:

Force is mass times acceleration:

F = ma

25 N = (2 kg) a

a = 12.5 m/s²

Given:

v₀ = 0 m/s

Δx = 4 m

Find: v

v² = v₀² + 2aΔx

v² = (0 m/s)² + 2 (12.5 m/s²) (4 m)

v = 10 m/s

You might be interested in

Does the sun fuse hydrogen into helium or vice versa?

NikAS [45]

Hydrogen has the smaller, lighter, simpler nucleus.
Helium has the larger, heavier, more complex nucleus.
Hydrogen nuclei are fused to form helium nuclei.
When that happens, energy is released.

6 0

3 years ago

A hoop is rolling without slipping along a horizontal surface with a forward speed of 5.50 m/s when it starts up a ramp that mak

Burka [1]

Answer:

$v_f = 4.22 m/s$

Explanation:

As we know by energy conservation

initial total energy = final total energy

so we have

$\frac{1}{2}mv^2 + \frac{1}{2}I\omega^2 = \frac{1}{2}mv_f^2 + \frac{1}{2}I\omega_f^2 + mgL sin\theta$

so we have

$v = R \omega$

$I = mR^2$

$mv_i^2 = mv_f^2 + mgL sin\theta$

$5.50^2 = v_f^2 + (9.81)(3) sin25$

$30.25 - 12.43 = v_f^2$

$v_f = 4.22 m/s$

5 0

4 years ago

What holds the stars together in their galaxies? A. light B. orbits of the planets C. weight D. gravity

RUDIKE [14]

It's D. Gravity holds everything in place

8 0

3 years ago

Read 2 more answers

What is a physical combination of two or more substances that are blended together without forming a new substance?

Romashka [77]

Answer:

It is called a mixture.

Explanation:

A mixture is a physical combination of 2 or more substances that are blended together without forming a new substance.

8 0

3 years ago

1. A 30kg mass is lift to height of 1.5mm, calculate:

Klio2033 [76]

Answer:

find the down force of gravaty and times it by 30kg wich will get you fps

Explanation:

8 0

3 years ago