3 years ago

Which is not an example of unbalanced force acting on an object

Physics

1 answer:

Viktor [21]3 years ago

4 0

Answer:

A motorcycle changing speed from 20km/h to 35km/h

Explanation:

it doesn't show unbalanced force acting on the object but instead, the motorcycle changing speed from 20km/h to 35km/h

You might be interested in

Which of the following is not an air pollutant?

Lelu [443]

Answer: 1. Carbon dioxide is not an air pollutant

Explanation: it can be toxic and or safe

7 0

2 years ago

Read 2 more answers

An ice skater can change the rate of their spin by moving their arms into and away from their body without any other forces or t

pychu [463]

Answer:

Angular momentum is conserved if there are no external forces

P1 = P2

I1 ω1 = I2 ω2

ω2 / ω1 = I1 / I2

If the skater pulls their arms in (I2 < I1) then the angular speed must increase for angular momentum to be conserved.

3 0

3 years ago

PLEASE HELP ME on this question.

VladimirAG [237]

The second one is the answer

4 0

3 years ago

A rock is thrown at an angle of 60∘ to the ground. If the rock lands 25m away, what was the initial speed of the rock? (Assume a

Zinaida [17]

Answer:

$v_0 = 16.82\ m/s$

Explanation:

given,

angle at which rock is thrown = 60°

rock lands at distance,d = 25 m

initial speed of rock, = ?

In horizontal direction

distance = speed x time

d = v₀ cos 60° t

25 = v₀ cos 60° t............(1)

now,

in vertical direction

displacement in vertical direction is zero

using equation of motion

$s = ut +\dfrac{1}{2}gt^2$

$0 =v_0 sin 60^0 t - 4.9 t^2$

$v_o sin 60^0 = 4.9 t$

$t = \dfrac{v_0 sin 60^0}{4.9}$

putting the value of t in equation (1)

$25 = v_0 cos 60^0\times \dfrac{v_0 sin 60^0}{4.9}$

$25 =\dfrac{v_0^2cos 60^0 sin 60^0}{4.9}$ v

$v_0^2 = 282.90$

$v_0 = 16.82\ m/s$

Hence, the initial speed of the rock is equal to 16.82 m/s

4 0

3 years ago

When the three primary pigments are mixed , the resulting is

azamat

You would end up with a brown/black color depending on how much of each pigment was added! Hope this helps.

6 0

3 years ago