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2 years ago

10

PLEASE HELP ME TIMED TEST!!!

2 answers:

Dmitry [639]2 years ago

8 0

Explanation:

$\boxed{\sf{K.E = \dfrac{1}{2} \times m \times v^2}}$

Here, K . E or Kinetic Energy is given as 14 J
Here, mass is 17 kg

Let's Do!

$\boxed{\sf{14 = \dfrac{1}{2} \times 17 \times v^2}}$

$\boxed{\sf{\dfrac{14 \times 2}{17} = v^2}}$

$\boxed{\sf{ \sqrt{\dfrac{14 \times 2}{17}}= v}}$

So, 1.283 m/s is the required answer.

malfutka [58]2 years ago

7 0

Answer:

56

Explanation:

I just want the points to be completely honest with you.

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What do biologist geologist have in common how are they different

Delicious77 [7]

The prefix for Bio is life so a biologist studies life of living organisms
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What is in common would be animals and plants
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2 years ago

Lance Armstrong bikes at a constant speed up the Col d’Izoard, a famous mountain pass. Assume his teammates do such a good job r

svetoff [14.1K]

Work done against gravity to climb upwards is always stored in the form of gravitational potential energy

so we can say

$W = mgh$

here h = vertical height raised

so here we know that

$h = 14.1 sin7.3 km$

here we have

$h = 1.79 km$

now from above equation

$W = (83 kg)(9.81 m/s^2)(1.79 \times 10^3 m)$

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7 0

2 years ago

How much work is done if a force of 20 N moves an object a distance of 6 m?

Nesterboy [21]

Explanation:

W=F×s

w=20N×6m=120J

W=120J

3 0

2 years ago

PLEASE HLEP I WILL GIVE BRAINLIEST TO CORRECT ANSWER!!!!!!

Hoochie [10]

Answer:

75 km/h

Explanation:

Speed = Distance divided by Time.

The train went a distance of 300 km in 4 hours. Therefore, the speed of the train is: 300 divided by 4 = 75 km/h

8 0

2 years ago

Read 2 more answers

an object traveling 200 feet per second slows to 50 feet per second in 5 seconds. Calculate the acceleration of the object

emmainna [20.7K]

Answer:

The acceleration of the object is $-30\ m/s^2$

Explanation:

Given:

Initial velocity of object $v_i$ = 200 feet/second

Final velocity of object $v_f$ = 50 feet/second

Time of travel = 5 seconds

To calculate acceleration of the object we will find the rate of change of velocity with respect to time.

So, acceleration $a$ is given by:

$a=\frac{v_f-v_i}{t}$

where $v_f$ represents final velocity, $v_i$ represents initial velocity and $t$ is time of travel.

Plugging in values to evaluate acceleration.

$a=\frac{50-200}{5}$

$a=\frac{-150}{5}$

$a=-30\ m/s^2$

The acceleration of the object is $-30\ m/s^2$ (Answer). The negative sign shows the object is slowing down.

4 0

3 years ago