All categories

4 years ago

An apple drops from a tree and hits the ground in 1.5s what is its speed just before it hits the ground?

Physics

1 answer:

Zarrin [17]4 years ago

8 0

Vf - Vo = gT

where

Vf = velocity of apple just before hitting the ground

Vo = initial velocity of apple = 0

T = time for apple to hit the ground = 1.5 sec (given)

g = acceleration due to gravity = 9.8 m/sec^2 (constant)

Substituting appropriate values,

Vf - 0 = 9.8(1.5)

Vf = 14.7 m/sec.

You might be interested in

What needs to be done to balance this

navik [9.2K]

Answer:

I'm not sure, but "Add coefficient 2 to O2...". You didn't really write out the equation properly.

4 0

3 years ago

Which unit abbreviation is a measurement of force?

Rufina [12.5K]

Unit it is c trust please

3 0

3 years ago

When placed in direct sunlight, which an object will absorb the most visible light energy

Vikentia [17]

I would guess anything that is black? black absorbs there most light energy. that's is why a black car in the sun will always be hotter inside than a white car.

3 0

4 years ago

After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 55.0 cm. She finds the pendulum m

forsale [732]

Answer:

Acceleration due to gravity will be $g=5.718m/sec^2$

Explanation:

We have given length of pendulum l = 55 cm = 0.55 m

It is given that pendulum completed 100 swings in 145 sec

So time taken by pendulum for 1 swing $=\frac{145}{100}=1.45sec$

We have to find the acceleration due to gravity at that point

We know that time period of pendulum;um is given by

$T=2\pi \sqrt{\frac{l}{g}}$

So $1.45=2\times 3.14\times \sqrt{\frac{0.55}{g}}$

$\sqrt{\frac{0.55}{g}}=0.230$

Squaring both side

${\frac{0.3025}{g}}=0.0529$

$g=5.718m/sec^2$

So acceleration due to gravity will be $g=5.718m/sec^2$

3 0

4 years ago

Write down any 5 example of conservation of momentum?

Verdich [7]

Answer:

1) Motion of air mass moving from equator northward (closer to earth axis)

2) Motion of object in orbit

3) Collision of 2 objects

4) Skater changing rotation by extension of arms

5) Motion of rocket due to velocity of expelled gas

6 0

3 years ago