1 year ago

If the force acting on a body of mass 40 kg is doubled . by how much will the acceleration change

1 answer:

4 0

The acceleration will be doubled because the force and the acceleration are directly proportional please make my answer the brainliest. Thanks :)

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Why does my older brother spend more time with his girlfriend then he does with me and why dose it feel like I’m loosing him WHY

prisoha [69]

Answer:

Because he loves hid girlfriend more than, u. He's looking for love

Explanation:

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2 years ago

If two objects with static charge are attracted what do you know about them?

klemol [59]

They carry opposite charge ( one has negative charge and one has positive charge)

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3 years ago

An arrow is launched upward with an initial speed of 100 meters per second (m/s). The equations above describe the constant-acce

ankoles [38]

Answer:

d=510.2m

t=10.2s

Explanation:

The formulas for accelerated motion are:

$v=v_0+at\\x=x_0+v_0t+\frac{at^2}{2}$

From them we can get $v^2=v_0^2+2ad$ .

We have:

$v-v_0=at\\t=\frac{v-v_0}{a}$

And substitute:

$x=x_0+v_0(\frac{v-v_0}{a})+\frac{a}{2}(\frac{v-v_0}{a})^2\\x-x_0=\frac{v_0(v-v_0)}{a}+\frac{(v-v_0)^2}{2a}$

We multiply both sides by 2a, and continue:

$2a(x-x_0)=2v_0(v-v_0)+(v-v_0)^2=2v_0v-2v_0^2+v^2+v_0^2-2vv_0=v^2-v_0^2$

Being d the displacement $x-x_0$ , we have $v^2=v_0^2+2ad$

For our exercise, we will write this as:

$d=\frac{v^2-v_0^2}{2a}$

And taking upwards direction positive and imposing final velocity 0m/s (for maximum height), we have:

$d=\frac{-v_0^2}{2a}=\frac{-(100m/s)^2}{2(-9,8m/s^2)}=510.2m$

For the time we use:

$t=\frac{v-v_0}{a}=\frac{-v_0}{a}=\frac{-(100m/s)}{(-9.8m/s^2)}=10.2s$

6 0

3 years ago

When two objects collide, the momentum of the system remains constant. This is a statement of ______________.

Fudgin [204]

Conservation of momentum

3 0

3 years ago

Read 2 more answers

Need help on these 2 questions please????? Hurry

fredd [130]

Answer:

Question 1 the anwser is 300 meters. Question 2 the answer is speed.

is Explanation:

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3 years ago