All categories

3 years ago

A body is travelling with a velocity 30 m/s².what will be its velocity after 4s?

Physics

1 answer:

Ipatiy [6.2K]3 years ago

3 0

Answer:

70m/s²

Explanation:

we will use the first equation of Dalton to find it

You might be interested in

What is most likely source of the waves approaching this coastline

hjlf

Assuming that you mean waves on the surface of a large body of water (like an ocean or lake), the most probable cause of these is the wind. The friction between the moving air and the water surface makes the water move. Hope this answers the question. Have a nice day.

4 0

3 years ago

Kim throws a beach ball up in the air. It reaches its maximum height 0.50s later. We can ignore air resistance. What was the bea

notka56 [123]

Answer:

The beach ball's velocity at the moment it was tossed into the air is 4.9 m/s.

Explanation:

Given:

Time taken by the ball to reach maximum height is, $t=0.50\ s$

We know that, velocity of an object at the highest point is always zero. So, final velocity of the ball is, $v=0\ m/s$

Also, acceleration acting on the ball is always due to gravity. So, acceleration of the ball is, $a=g=-9.8\ m/s^2$

The negative sign is used as acceleration is a vector and it acts in the downward direction.

Now, we have the equation of motion relating initial velocity, final velocity, acceleration and time given as:

$v=u+at$

Where, 'u' is the initial velocity.

Plug in the given values and solve for 'u'. This gives,

$0=u-9.8(0.5)\\u=9.8\times 0.5\\u=4.9\ m/s$

Therefore, the beach ball's velocity at the moment it was tossed into the air is 4.9 m/s

3 0

4 years ago

Read 2 more answers

How do valence electrons relate to the chemical reactions of an element?

11111nata11111 [884]

Valence electrons are required for certain bonding processes. Without them you cannot bond with certain elements. For example, carbon bonds really well with carbon because it has the same amount of valence electrons. However carbon would not bond well with uranium due to the massive differences in valence electrons. Hope this helps!

6 0

3 years ago

Where would the barycenter of these two bodies be located given their masses?

n200080 [17]

It's kinda tough, since we don't know the actual numerical locations of the points, only an approximate picture.

The big ball has 11 times the mass of the small ball, so the small ball is 11 times as far from the barycenter as the big ball is.

If any of the points is marked at the actual barycenter, it can only be point-A .

3 0

3 years ago

- A capacitor's dielectric material is a vacuum. The capacitor's dielectric constant, or K, will be equal to

dlinn [17]

If a capacitor's dielectric constant is vacuum its dielectric constant is k will be equal to 1.

Explanation:

Relative permittivity of a dielectric substance is referred to as its dielectric constant. Relative permittivity/dielectric constant k is a dimensionless quantity that is the ratio of absolute permittivity and vacuum permittivity.

It is given by the expression

k=k=ε /ε0

where ε denotes absolute permittivity and ε0 denotes permittivity of vacuuum.

Absolute permittivity ε of vacuum= ε0

therefore k= ε0/ ε0=1

dielectric constant of vacuum is 1 .

4 0

3 years ago

A body is travelling with a velocity 30 m/s².what will be its velocity after 4s?​

A body is travelling with a velocity 30 m/s².what will be its velocity after 4s?