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4 years ago

What is acceleration

2 answers:

7 0

<span>Acceleration is a change in motion ... slowing down, speeding up,
or changing direction even if speed doesn't change</span>.

kvasek [131]4 years ago

4 0

Explanation: Acceleration is the rate of change in velocity. Involves a change in speed and direction. When acceleration involves a change in speed only: Positive acceleration it occurs when an object speeds up. Negative acceleration it occurs when an object slows down. Acceleration is a change of velocity over a period of time, expressed by the equation below.

A=Δv/t

vf-vi=Δv/t

A=m/s-m/s/s

=m/s/s=m/s²

m/s/s

Hope this helps!

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Convert 1.4×10^9km^3 into cubic meters

Vadim26 [7]

1km=10^3 m,1km^3=10^9cubic metres answer is 1.4x10^18cubic meters

3 0

3 years ago

Read 2 more answers

Kalea throws a baseball directly upward at time t = 0 at an initial speed of 13.7 m/s. How high h does the ball rise above its r

Trava [24]

Answer:

h = 9.57 seconds

Explanation:

It is given that,

Initial speed of Kalea, u = 13.7 m/s

At maximum height, v = 0

Let t is the time taken by the ball to reach its maximum point. It cane be calculated as :

$v=u-gt$

$u=gt$

$t=\dfrac{u}{g}$

$t=\dfrac{13.7}{9.8}$

t = 1.39 s

Let h is the height reached by the ball above its release point. It can be calculated using second equation of motion as :

$h=ut+\dfrac{1}{2}at^2$

Here, a = -g

$h=ut-\dfrac{1}{2}gt^2$

$h=13.7\times 1.39-\dfrac{1}{2}\times 9.8\times (1.39)^2$

h = 9.57 meters

So, the height attained by the ball above its release point is 9.57 meters. Hence, this is the required solution.

7 0

4 years ago

URGENT

Advocard [28]

Answer:

$give \\ mass(m) = 1350kg \\ acceleration(a) = 1ms {}^{ - 2} \ \\ sln\ \\ from \: our \: formula \\ \: f = ma \\1350kg \times 1ms {}^{ - 2} \\ f = 1350newton$