It depends on how much force there both putting on the box but because it does say the correct answer is C.
Answer:
true
Explanation:
a body can only be accelerating and have speed if it's in motion
Answer:
a) N
b) m/s
Explanation:
a)
= radius of the orbit = 0.522 x 10⁻¹⁰ m
= magnitude of charge on each proton and electron = 1.6 x 10⁻¹⁹ C
Using coulomb's law , magnitude of electric force on the particle is given as
N
b)
= mass of electron = 9.1 x 10⁻³¹ kg
= speed of electron = ?
Centripetal force is being provided by the electric force, hence
Centripetal force = electric force
m/s
Answer:
The speed and direction of the two players immediately after the tackle are 3.3 m/s and 53.4° South of West
Explanation:
given information:
mass of fullback, = 92 kg
speed of full back, = 5.8 to south
mass of lineman, =110 kg
speed of lineman, = 3.6
according to conservation energy,
assume that the collision is perfectly inelastic, thus
initial momentum = final momentum
= '
m₁v₁ = (m₁+m₂)'
' = m₁v₁/(m₁+m₂)
= (92) (5.8)/(92+110)
= 2.64 m/s
= '
m₂v₂ = (m₁+m₂)'
' = m₁v₁/(m₁+m₂)
= (110) (3.6)/(92+110)
= 1.96 m/s
thus,
' = √'²+'²
= 3.3 m/s
then, the direction of the two players is
θ = 90 - tan⁻¹('/')
= 90 - tan⁻¹(1.96/2.64)
= 53.4° South of West
From 50km/h to 0km/h in 0.5s we need next acceleration:
First we convert km/h in m/s:
50km/h = 50*1000/3600=13.8888 m/s
a = v/t = 13.88888/0.5 = 27.77777 m/s^2
Now we use Newton's law:
F=m*a
F=1700*27.7777 = 47222N