Answer:
a gravitational force is double
b gravitational force become 4 time
c gravitational force is reduced by 4
Answer:
It can go back to it's original shape
Explanation:
Answer:
11.86°
Explanation:
Projectile motion is a form of motion where an object moves in parabolic path (trajectory). Projectile motion only occurs when there is one force applied at the beginning on the trajectory, after which the only interference is from gravity.
The range of an object experiencing projectile motion is given by:
R = u²sin(2θ) / g
where u is the initial velocity, θ is the angle with horizontal and g is the acceleration due to gravity
Given that R = 6.8 m, g = 10 m/s², u = 12 m/s.
R = u²sin(2θ) / g
substituting:
6.8 = 13²sin(2θ) / 10
13²sin(2θ) = 68
sin(2θ) = 0.4024
2θ = sin⁻¹(0.4024)
2θ = 23.73
θ = 11.86°
Kilograms, hectograms, decagrams, grams, decigrams, centigrams, milligrams
Answer:
The velocity is 6 m/s
Explanation:
We use the formula of kinetic energy=
Ec= 1/2 x m x v2
2160 J = 1/2 x 120 kg x v2
v =![\sqrt[n]{x} 2160Joulex2/120kg\\](https://tex.z-dn.net/?f=%5Csqrt%5Bn%5D%7Bx%7D%202160Joulex2%2F120kg%5C%5C)
v= 6m/s
1Joule= 1 kgm2/s2
