4 years ago

What force pulls the truck/ramp down towards the track? Group of answer choices

Physics

1 answer:

Effectus [21]4 years ago

8 0

Answer:

B.Gravity

Explanation:

You might be interested in

A roller coaster is at the top of a 102 m hill and a mass of 120 kg. The coaster (at this

dybincka [34]

Height=h=102m
Mass=m=120g
Acceleration due to gravity=g=10m/s^2

$\\ \sf\longmapsto P.E=mgh$

P E means potential energy

$\\ \sf\longmapsto P.E=102(120)(10)$

$\\ \sf\longmapsto P.E=122400J$

7 0

3 years ago

1The density of an of an object with a volume of 60.0 and mass of 400.0g is______

Kobotan [32]

D is the answer
To get the density you divide mass by volume
So the equation is 400/60=d

4 0

3 years ago

7. What type of mineral can scratch glass, but cannot scratch steel?

zimovet [89]

The answer is (D) Fluorite

3 0

3 years ago

A plane moves at a certain velocity and then it accelerates at the rate of 52m/s for a distance of 2300m to reach a velocity of

Illusion [34]

52m/s is the answer because before it was gonna accelerate it was 52 m/s

6 0

3 years ago

Lora (of mass 43.6 kg) is an expert skier. She starts at 3.6 m/s at the top of the lynx run, which is 67 m above the bottom. Wha

Likurg_2 [28]

Explanation:

As per the law of conservation of energy, the final mechanical energy of Lora is equal to its initial mechanical energy. So, when Lora is at the bottom of ski run then her potential energy will change into kinetic energy.

Hence, $E_{initial} = \frac{mv_{i}^{2}}{2} + mgh
$

$E_{final} = \frac{mv_{f}^{2}}{2}$

Now, final kinetic energy that will be at the bottom of the ski run is as follows.

Let, $E_{k} = E_{final}$

$E_{intial} = E_{final}$

$E_{k} = \frac{mv_{i}^{2}}{2} + mgh
$

= $\frac{(43.6 \times (3.6)^{2}}{2} + (43.6 \times 9.81 \times 67)$

= 282.53 + 28656.97

= 28939.502 J

Thus, we can conclude that her final kinetic energy at the bottom of the ski run is 28939.502 J.

3 0

3 years ago