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oee [108]
3 years ago
12

What is Newton's gravitational constant ? write down its value and si unit.​

Physics
1 answer:
Irina18 [472]3 years ago
6 0
Answer: 6.67 x 10^-11 m^3•kg^-1•s^-2
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A 5 kg object moving to the right at 4 m/s collides inelastically with a 5 kg object
skad [1K]

Answer:

The linear momentum of a particle with mass m moving with velocity v is defined as

p = mv (7.1)

Linear momentum is a vector . When giving the linear momentum of a particle you must

specify its magnitude and direction. We can see from the definition that its units must be

kg·m

s

. Oddly enough, this combination of SI units does not have a commonly–used named so

we leave it as kg·m

s

!

The momentum of a particle is related to the net force on that particle in a simple way;

since the mass of a particle remains constant, if we take the time derivative of a particle’s

momentum we find

dp

dt = m

dv

dt = ma = Fnet

so that

Fnet =

dp

dt (7.2)

5 0
2 years ago
A projectile is launched with an initial velocity of 25 m/s at an angle of 30° above the horizontal. The projectile reaches maxi
Alchen [17]

Answer:

x ≈ 56 m

Explanation:

vertical initial velocity =v_{0y}(t) = 25 m/s* sin(30°)= 12.5 m/s

height = h

h =v_{0y}t+\frac{at^{2}}{2} \\\\65m = 12.5m/s*t + \frac{9.8m/s^{2}*t^{2}}{2} \\\\t=2.584 s

t- time is found solving quadratic equation.

horizontal velocity = v_{0x}=25m/s*cos(30^{o})=21.65 m/s

Horizontal velocity is constant, so distance x=v_{0x}*t =21.65 m/s *2.584 s=55.9 = 56 m

6 0
3 years ago
What objects can be seen from earth because they producde there own light? 
Lena [83]

- neon signs
- fireworks
- rockets during the ascent
- meteors
- fireflies
- stars
7 0
3 years ago
When someone asked you if you have a special talent.
Nostrana [21]

Answer:

lowkeyyyy

explanation:

4 0
2 years ago
Read 2 more answers
Geologists have divided Earth's history into time units, which are regularly based on
Arturiano [62]
They are based on layers of rock the correspond to certain time periods, so my guess would be D.
8 0
3 years ago
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