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3 years ago

At what rate does projectile motion accelerate in the horizontal direction?

1 answer:

3 0

The velocity doesn't change in the horizonal direction for projectile motion. Therefore, horizontal acceleration is always zero. $a_{x-direction} = 0 m/s^{2}$ .

You might be interested in

Find the moment of force of 60 Newton about an axis of rotation at distance 20 cm from the force

777dan777 [17]

Answer:

10 N.m

Explanation:

Force * Perpendicular distance.

= 20 N * 0.5 m

= 10 N.m

8 0

3 years ago

A 2.00 kg, frictionless block s attached to an ideal spring with force constant 550 N/m. At t = 0 the spring is neither stretche

gladu [14]

Answer:

a) A = 0.603 m , b) a = 165.8 m / s² , c) F = 331.7 N

Explanation:

For this exercise we use the law of conservation of energy

Starting point before touching the spring

Em₀ = K = ½ m v²

End Point with fully compressed spring

$Em_{f}$ = $K_{e}$ = ½ k x²

Emo = $Em_{f}$

½ m v² = ½ k x²

x = √(m / k) v

x = √ (2.00 / 550) 10.0

x = 0.603 m

This is the maximum compression corresponding to the range of motion

A = 0.603 m

b) Let's write Newton's second law at the point of maximum compression

F = m a

k x = ma

a = k / m x

a = 550 / 2.00 0.603

a = 165.8 m / s²

With direction to the right (positive)

c) The value of the elastic force, let's calculate

F = k x

F = 550 0.603

F = 331.65 N

5 0

3 years ago

Who produces more work? Which one produces more power?

Gemiola [76]

The person that produces more power is Person A because its power is 50watts.

<h3>Calculation of power</h3>

For person A = Power= ,work done/ time

But work done = force × distance

person A = 100×3/6

= 300/6

= 50watts

For person B = 100×5/20

= 500/20

= 25watts

Therefore, the person that produces more power is Person A because its power is 50watts.

Learn more about power here:

brainly.com/question/1634438

#SPJ1

4 0

2 years ago

2. A 3 kg ball is thrown downward at 4 m/s from a height of 1.5 m. a. What is the kinetic energy of the ball as it leaves the th

ludmilkaskok [199]

Answer:

a) 24 J

b) Gravitational Force

c) 45 J

d) 0

e) 6.782m/s

Explanation:

a) m = 3kg

v = 4m/s

h = 1.5m

KE = ?

0.5 * 3 * 16 = 24J

b) Gravitational force

c) F = ma = 3 * 10 = 30N

Work done = Force * distance = 30 * 1.5 = 45J

d) Final Kinetic Energy of the ball is zero because the ball eventually stops moving

e) velocity of ball as it strikes the ground = v

$v^{2} - u^{2} = 2as$ where

v is the velocity as it strikes the ground

u is the initial velocity

a is acceleration

s is the distance

Now since the ball is thrown downwards, a is positive because the velocity of the ball is increasing as the gravitational force acts on it

u = 4m/s

a = 10

s = 1.5

=> $v = \sqrt{2as + u^{2} }$

= $\sqrt{(2*10*1.5) + 16}$

= $\sqrt{46} = 6.782m/s$

3 0

3 years ago

If the mass attached to a spring is increased and the spring constant is decreased, does the proof of the oscillating does the m

Fofino [41]

Answer:

Will increase

Explanation:

The period of an oscillating motion is the time it takes for the system to make one complete oscillation.

The period of a spring-mass system is given by the equation:

$T=2\pi \sqrt{\frac{m}{k}}$

where:

k is the spring constant

m is the mass attached to the spring

In this problem:

- The mass of the system is increased

- The spring constant is decreased

We observe that:

- The period of the system is proportional to the square root of the mass: so as the mass increases, the period will increase as well

- The period is inversely proportional to the square root of the spring constant: so as the constant decreases, the period will increase

Therefore, this means that in this case, the period will increase.

7 0

4 years ago