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Alenkinab [10]
3 years ago
14

A force of 450 N accelerates a box across a frictionless surface at a rate of 15 m/s 2 . What is the mass of the box? 30 N 30 kg

6,750 N 6,750 kg
Physics
2 answers:
Elza [17]3 years ago
3 0
Hey there,

Your correct answer would be 30kg.

450 = m × 15 or also 450/15=m.

Hope this helps.

~Jurgen
dedylja [7]3 years ago
3 0
450=m×15
m=450÷15=30kg

See ya Broski!
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The graph above shows the position x as a function of time for the center of mass of a system of particles of total mass 6. 0 kg
kumpel [21]

The resulting change in momentum of the system will be +18.6 Ns. The momentum is conserved.

<h3>What is the law of conservation of momentum?</h3>

According to the law of conservation of momentum, the momentum of the body before the collision is always equal to the momentum of the body after the collision.

The given data in the problem is;

m is the mass =6.0 kg

t is the time interval=2 second

From Newton's second law;

\rm \triangle P =m \triangle V \\\\ \triangle P= m(\frac{\triangle x}{\triangle t} )\\\\

From the graph;

\rm \triangle t = 2sec\\\\ \triangle x = (12-8) m

The change in the momentum is;

\rm \triangle P = m\tr(\frac{v-u}{t}) \\\\ \triangle P =9.3 \times \frac{12-8}{2} \\\\ \triangle P= +18.6 \  N.s

Hence, the resulting change in momentum of the system will be +18.6 Ns.

To learn more about the law of conservation of momentum, refer;

brainly.com/question/1113396

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6 0
2 years ago
A man weighing 720 N and a woman weighing 500 N have the same momentum. What is the ratio of the man's kinetic energy Km to that
tiny-mole [99]

Answer:

Because weight W = M g, the ratio of weights equals the ratio of masses.

(M_m g)/ (M_w g) = [ (p^2 Man )/ (2 K_man)] / [ (p^2 Woman )/ (2 K_woman)

but p's are equal, so

K_m/K_m = (M_w g)/(M_m g) = W_woman / W_man = 450/680 = 0.662Explanation:

4 0
3 years ago
A swimmer can swim in still water at a speed of 9.50 m/s. he intends to swim directly across a river that has a downstream curre
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2. Determine the current in a 120-watt bulb plugged into a 120-volt outlet.
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Answer:

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Explanation:

Power = VI

V = voltage

I = current

Given

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V = 120 volts

Therefore

120 = 120 x I

Divide both sides by 120

120/120 = 120/120 x I

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I = 1 ampere

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trapecia [35]

Answer:

Hello, how's your day going?

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