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3 years ago

If an object moving at 5 m/s accelerates for 30 seconds at a rate of 2

Physics

1 answer:

klasskru [66]3 years ago

4 0

Answer:

V=u + at

V= final velocity

U= Initial velocity

a= acceleration

t= time taken

V= 5 + 30*2

V=5+60

V=65m/s

Explanation:

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A man kicks the 150-g ball such that it leaves the ground at an angle of 60° and strikes the ground at the same elevation a dist

egoroff_w [7]

Answer:

$313.92\ \text{m/s}$

$47.088\ \text{kg m/s}$

Explanation:

m = Mass of ball = 150 g

$\theta$ = Angle of kick = $60^{\circ}$

$x$ = Displacement of ball in x direction = 12 m

Range of projectile is given by

$x=\dfrac{u\sin^2\theta}{2g}\\\Rightarrow u=\dfrac{2xg}{\sin^2\theta}\\\Rightarrow u=\dfrac{2\times 12\times 9.81}{\sin^260^{\circ}}\\\Rightarrow u=313.92\ \text{m/s}$

The velocity of the ball instantly after the man kicks the ball is $313.92\ \text{m/s}$

Impulse is given by

$J=mu\\\Rightarrow J=0.15\times 313.92\\\Rightarrow J=47.088\ \text{kg m/s}$

The impulse of his foot on the ball is $47.088\ \text{kg m/s}$ .

3 0

3 years ago

A 35 kg boy is riding a 65 kg go-cart. He pushes on the gas pedal, causing the cart to accelerate at 5 m/s2. Use the equation F

trasher [3.6K]

Answer:

$\boxed {\boxed {\sf 500 \ Newtons }}$

Explanation:

The equation for force is given:

$F=m*a$

First, we must find the total mass, which is the sum of the boy's mass and the go-cart's mass.

total mass= boy's mass + go cart's mass

The boy's mass is 35 kilograms and the go cart's is 65 kilograms.

total mass= 35 kg+ 65 kg=100 kg

Now we know the total mass and the acceleration.

$m= 100 \ kg \\a= 5 \ m/s^2$

Substitute the values into the formula.

$F=100 \ kg * 5 \ m/s^2$

Multiply.

$F= 500 \ kg*m/s^2$

1 kilograms meter per square second is equal to 1 Newton.
Our answer of 500 kg*m/s² is equal to 500 Newtons.

$F= 500 \ N$

The force exerted by the go cart engine is <u>500 Newtons.</u>

4 0

3 years ago

Read 2 more answers

What is the free-throw line used for?

Genrish500 [490]

Answer:

it be the second one lad

Explanation:

i have done the playing pf the basketball

5 0

3 years ago

If the radius of a coinis 20cm, find its<br>surface area -

meriva

Answer:

800 $\pi$ cm²

Explanation:

Given parameters:

radius of the coin = 20cm

Unknown:

Surface area of the coin = ?

Solution:

A coin is made up of two faces;

Surface area = 2(πr²)

Insert the parameters and solve;

Surface area = 2( $\pi x 20^{2}$ )

Surface area = 800 $\pi$ cm²

8 0

3 years ago

A substance that is made of atoms of more than one type bound together is called a

BigorU [14]

The substance that is made of atoms of more than one type bound together is called an atomic bond or a multi bond

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3 years ago