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3 years ago

What is the relationship between the mass of an object and the force needed to slide it across a surface

1 answer:

3 0

The relationship between force (F), mass (m) and acceleration (a) is described in the equation F = ma. This equation means that a new force acting on a body will change velocity, and conversely, a change in velocity will generate a force

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PRACTIC

klasskru [66]

Answer:

2482 Kg.m/s

Explanation:

Momentum is a product of mass of an object and its velocity with consideration to the direction of velocity and expressed as, p=mv where m represent mass of the ostrich and v is the velocity in m/s, p is momentum.

Substituting the mass of ostrich with 146 kg and the velocity as 17 m/s then the momentum of the ostrich is equal to

P=146*17=2482 kg.m/s

Therefore, the momentum of ostrich is equal to 2482 kg.m/s

6 0

4 years ago

What is the gravitational force that two objects would feel if they are 3.5 meters apart? Object 1 has a mass of 10x10^5 kg and

polet [3.4K]

Answer:

1.63 N

Explanation:

F = GMm/r^2

= (6.67x10^-11)(10x10^5)(3x10^5) / 3.5^2

= 1.63 N ( 3 sig. fig.)

6 0

3 years ago

The gravitational force between Pluto and Charon is 3.61 × 1018 N. Pluto has a mass of 1.3 × 1022 kg, which is only slightly gre

raketka [301]

Answer:

The distance between Pluto and Charon is $1.96 \times 10^7 m$ 

Explanation:

Force of gravitation between two objects $F_g= \frac{G(M_1 M_2 )}{r^2}$

Where $M_1 \ and \ M_2$ are the masses of the objects,r is the distance between the objects

G is the universal gravitational constant= $6.67 \times 10^-^1^1 m^3/kg s^2$

Here mass of pluto = $1.3 \times 10^2^2 kg$

mass of charon = $1.6 \times 10^2^1 kg$

Force of gravitation $F_g=3.61 \times 10^1^8 N$

$F_g= \frac {G(M_1 M_2 )}{r^2}$

$r^2= \frac {G(M_1 M_2 )}{F_g }$

$r= \sqrt \frac{(G(M_1 M_2 )}{F_g}$

$=\sqrt \frac {((6.674\times 10^-^1^1) \times 1.3 \times 10^2^2 \times 1.6\times 10^2^1)}{(3.61 \times 10^1^8 )}$

= $\sqrt \frac {(13.88*10^32)}{(3.61*10^18)}$

= $1.96 \times10^7 m$

4 0

4 years ago

Read 2 more answers

Planets in our solar system do not revolve around the sun in perfect circles. Their orbits are more like ovals that scientists d

galben [10]

Planets in our solar system do not revolve around the sun in perfect circles. Their orbits are more like ovals that scientists describe as elliptical. It is one of Kepler's laws. The sun is the focus of all the planets. The correct answer is D.

7 0

4 years ago

A computational model predicts the speed of a roller coaster car at different heights given its speed at the lowest height of it

s2008m [1.1K]

Answer:

the answers, the correct one is A v= 22.5 m/s

Explanation:

We can solve this problem using the concepts of conservation of mechanical energy

Starting point. Lowest point of the trajectory

Em₀ = K = ½ m v₀²

Final point. When it is at a height of y = 20 m

$Em_{f}$ = K + U = ½ m v² + mg y

how energy is conserved

Emo = Emf

½ m v₀² = ½ m v² + m g y

v² = v₀² + 2 g y

let's calculate

v²2 = 30 2 + 2 9.8 20

v² = 508

v²= ra 508

v² = 22.54 m / s

When checking the answers, the correct one is A

4 0

3 years ago