3 years ago

Need help on these 2 questions please????? Hurry

Physics

1 answer:

fredd [130]3 years ago

3 0

Answer:

Question 1 the anwser is 300 meters. Question 2 the answer is speed.

is Explanation:

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Two ice skaters push off against one another starting from a stationary position. The 54.1-kg skater acquires a speed of 0.375 m

asambeis [7]

Answer:

0.338125 m/s

Explanation:

Applying,

Law of conservation of momentum

m'v' = mv............ Equation 1

Where m' = mass of the first skater, v' = velocity of the first skater, m = mass of the second skater, v = velocity of the second skater.

make v the subject of the equation

v = m'v'/m........... Equation 2

From the question,

Given: m' = 54.1 kg, v' = 0.375 m/s, m = 60 kg

Substitute these values into equation

v = (54.1×0.375)/60

v = 20.2875/60

v = 0.338125 m/s

3 0

2 years ago

5. Kelvin applied a rightward force of 302 N to a 29 kg desk to accelerate it across the floor. The

Naddik [55]

The force of friction is 213.2 N

Explanation:

The frictional force acting on an object sliding on a surface is given by:

$F_f = \mu mg$

where:

$\mu$ is the coefficient of friction

m is the mass of the object

g is the acceleration of gravity

In this problem we have

$\mu=0.750$

m = 29 kg

$g=9.8 m/s^2$

Therefore, the force of friction is

$F_f = (0.750)(29)(9.8)=213.2 N$

Learn more about friction:

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#LearnwithBrainly

3 0

2 years ago

A spring with k = 500 N/m stores 704 J. How far is it extended from the equilibrium position

kaheart [24]

Given that:

k = 500 n/m,

work (W) = 704 J

spring extension (x) = ?

we know that,

Work = (1/2) k x²

704 = (1/2) × 500 × x²

x = 1.67 m

A spring stretched for 1.67 m distance.

4 0

2 years ago

10. A kicked soccer ball has an initial velocity of 30 m/s at an angle of 42° above the horizontal, level

Serhud [2]

Answer:

ZAMN

Explanation:

5 0

2 years ago

FIRST ANSWER IS BRAINIEST TAKE YOUR TIME I NEED RIGHT ANSWERS FIRST ANSWER IS BRAINIEST ANSWER TAKE YOUR TIME NEED RIGHT ANSWER

V125BC [204]

A = 7
B = 4
C = 5
D = 9
E = 8
F = 1
G = 2
H = 10
I = 6
J = 3

4 0

2 years ago

Read 2 more answers