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Nookie1986 [14]
3 years ago
15

Which equation can be used to solve for accelerarion

Physics
2 answers:
guapka [62]3 years ago
8 0

Answer:



a = \frac{v-u}{t}

MaRussiya [10]3 years ago
6 0

Answer:

a = Δv/Δt

Explanation:

The little triangle stands for change and t=time and v=velocity

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You pull with a force of 295 N on a rope that is attached to a block of mass 22 kg, and the block slides across the floor at a c
Sergeeva-Olga [200]

Answer:

Fnet = 0

Explanation:

  • Since the block slides across the floor at constant speed, this means that it's not accelerated.
  • According Newton's 2nd Law, if the acceleration is zero, the net force on the sliding mass must be zero.
  • This means that there must be a friction force opposing to the horizontal component of the applied force, equal in magnitude to it:

       F_{appx} = F_{app} * cos \theta = 295 N * cos 35 = 242 N  (1)

  • In the vertical direction, the block is not accelerated either, so the sum of the normal force and the vertical component of the applied force, must be equal in magnitude to the force of gravity on the block:

      F_{appy} = F_{app} * cos \theta = 295 N * sin 35 = 169 N  (2)

⇒    169 N + Fn = Fg = 216 N  (3)

  • This means that there must be a normal force equal to the difference between Fappy and Fg, as follows:
  • Fn = 216 N - 169 N = 47  N (4)

6 0
2 years ago
PLEASE HELP ASAP PHYSICS QUESTION!!
ivann1987 [24]

Answer:

There will be a force of gravity and a normal force coming from the track itself.

Explanation:

6 0
3 years ago
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A ball is thrown upward at 4 meters per second starting from ground level. How long does it take for the ball to return to the g
nata0808 [166]

Answer:

it takes 2 min to return

Explanation:

6 0
2 years ago
Alicia is asked to calculate the change in momentum that occurs as she stops her bicycle. This is equivalent to the______ Applie
emmainna [20.7K]
It is the force applied to the bycicle
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3 years ago
A student uses 150 N to push a block of wood up a ramp at constant velocity of 2.6m/s. What is his power output?
11Alexandr11 [23.1K]

Answer:

P= 390 W

Explanation:

In physics, power is the rate of doing work or of transferring heat, i.e. the amount of energy transferred or converted per unit time.  Work  is a force F applied over a distance x. Matemathicaly it means

P = dW/dt ≈ d(F * x)/dt = xdF/dt + Fdx/dt. If force is constant dF/dt=0 so P=F dx/dt = P*v, where v is velocity, the rate of distance per unit time.

We have force and velocity. Newton is unit of Kg*m/s2, hence

P= 150 kgm/s2 * 2.6 m/s =390 Kgm2/s3 = 390 W, where W is Watts and is an unit of power

8 0
3 years ago
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