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4 years ago

14

Which are examples of projectile motion? Check all that apply. a kicker punting a football a car traveling along a highway a fre

e throw in basketball a ball rolling downhill a person throwing darts

2 answers:

o-na [289]4 years ago

8 0

A projectile is any object that is cast, fired, flung, heaved, hurled, pitched, tossed, or thrown<span>. </span>

Andrej [43]4 years ago

8 0

The answer would be A, C, and E

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A vehicle is travelling with uniform velocity along a straight, level stretch of highway. The combined force due to the rolling

faltersainse [42]

Answer:

The applied force on the vehicle is 5,000 N

Explanation:

From the question, we have the following parameters of the motion of the vehicle;

The form of the velocity with which the vehicle is travelling = Uniform velocity

The direction of motion of the vehicle = Along a straight and level stretch of the highway

The combined force which acts as resistance to the vehicle's motion = 5,000 N from rolling friction and resistance of the air opposite to the direction of motion

A vehicle travelling with uniform velocity has zero acceleration, therefore;

The acceleration of the vehicle, a = 0 m/s²

According to Newton's Second Law of Motion, we have;

Force, F = Mass, m × Acceleration, a

∴ The net force of acting on the vehicle, F = m × a

Where;

m = The mass of the vehicle

a = The acceleration of the vehicle = 0 m/s²

∴ F = m × 0 = 0

The net force on the vehicle = 0, therefore;

The applied force + The force of rolling friction and air resistance = 0

We therefore have;

The applied force + 5,000 N = 0

∴ The applied force = 0 - 5,000 N = -5,000 N

The applied force, F = 5,000 N in the direction of motion.

5 0

3 years ago

How do unemployment impact on an individual's psychological well being?

Natalija [7]

Answer:

Unemployment cause stress which ultimately has long-term physiological health effect

4 0

3 years ago

Which one of the following is not a derived quantity a)speed b)velocity c)time d)force

qaws [65]

Answer:

c) time

Explanation:

time is a fundamental quantity from which other quantities are derived

5 0

3 years ago

Determine the inductance L of a 0.65-m-long air-filled solenoid 3.2 cm in diameter containing 8400 loops.

den301095 [7]

Answer:

The inductance is $L = 0.1097 \ H$

Explanation:

From the question we are told that

The length is $l = 0.65 \ m$

The diameter is $d = 3.2 cm = 0.032 \ m$

The number of loops is $N = 8400$

Generally the radius is evaluated as

$r = \frac{ 0.032 }{2} = 0.016 \ m$

The inductance is mathematically represented as

$L = \frac{ \mu_o * N^2 * A }{ l }$

Here $\mu_o$ is the permeability of free space with value $\mu_o = 4\pi * 10^{-7} N/A^2$

A is the cross-sectional area which is mathematically evaluated as

$A = \pi r^2$

=> $A = 3.142 * (0.016)^2$

=> $A = 0.000804 \ m^2$

=> $L = \frac{ 4\pi * 10^{-7} * 8400^2 * 0.000804 }{ 0.65 }$

=> $L = 0.1097 \ H$

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3 years ago

Which of the following objects is the most likely to be magnetic?

Oksanka [162]

An iron pot is mostly magnetic

7 0

3 years ago

Read 2 more answers