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Minchanka [31]
3 years ago
13

Several forces act on a ball. Which of the following statements must be true? The velocity and acceleration could be in any dire

ction. None of these choices. The velocity and acceleration are in the direction of the resultant force. The velocity is in the direction of the resultant force, but the acceleration could be in any direction. The velocity could be in any direction, but the acceleration is in the direction of the resultant force.
Physics
1 answer:
mixer [17]3 years ago
5 0

Answer:

The velocity could be in any direction, but the acceleration is in the direction of the resultant force.

Explanation:

The ball (assuming that we can treat it as a point mass) must obey Newton's 2nd Law, that states that the acceleration produced by a force, is proportional to the applied force, being the mass the proportionality constant.

As the force is the vector, and the mass an scalar, the acceleration vector must be in the same direction as the force vector.

Velocity, instead, can be in any direction: When an object is speeding up is in the same direction as the acceleration, while if it is slowing down, it has just the opposite.

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7 0
3 years ago
what is the magnitude of the electric force between charges of 0.25 C and 0.11 C at a separation of 0.88 m? if the separation be
leonid [27]
F = k \cdot \frac{q_1 q_2}{d} = 9 \cdot 10^{9} \cdot \frac{0.25 \cdot 0.11}{0.88} =  144 \cdot 5^{9} \ N.

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3 years ago
An astronaut stands by the rim of a crater on the moon, where the acceleration of gravity is 1.62 m/. To determine the depth of
leva [86]

Answer;

=32.15 meters

Explanation;

Use the formula  

s= ut+ 0.5 a (t)^2 to find out 's'  

where s= distance traveled  

u=initial velocity which is zero in this case  

t= time taken to travel 's' distance  

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Therefore;

S = 0.5 * 1.62 * 6.3 * 6.3

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3 0
3 years ago
If Bert the Bat travels East at 200 meters in 10 seconds, what is his velocity?
dexar [7]

Answer:

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Explanation:

Given parameters:

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Time  = 10s

Unknown:

Velocity  = ?

Solution:

Velocity is the displacement divided by time;

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4 0
3 years ago
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1. Tangential velocity:

<em>e) the instantaneous velocity of a body moving in a circular path.</em>

2. Parabolic pathway

<em>c. a curved path followed by projectiles</em>

3. Projectile

<em>d) an object projected through space, traveling in two dimensions, that accelerates vertically due to gravity.</em>

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5. Centripetal force

<em>b) a force which keeps a body moving with a uniform speed along a circular path and is directed along the radius towards the center</em>

4 0
3 years ago
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