A body at rest will remain at rest unless acted on by a(an) ____

Emilio tries to jump to a nearby dock from a canoe that is floating in the water.Instead of a canoe that is floating in the wate

elixir [45]

Oooo that ones hard. ummm... idk i think we should just leave it to the experts ya know.

7 0

3 years ago

Which is a characteristic of projectile motion?

SVETLANKA909090 [29]

<h2>Right answer: It follows a curved path </h2>

The movement of a projectile is a movement in two dimensions (forming a curved path: a parabola shape) with constant acceleration.

A projectile is any body or object that is thrown or projected by means of some force and continues in motion by its own inertia. This means the only force that acts on it while in motion is the acceleration of gravity (in this case we are on Earth, so the gravity value is $9.8\frac{m}{s^{2}}$ ).

Where gravity influences the vertical movement of the projectile, while the horizontal movement of the projectile is the result of the tendency of any object to remain in motion at a constant speed (according to Newton's 1st law of motion sometimes called Law of Inertia).

The other options are incorrect because are false:

-The forward motion negates air resistance: There is always at least a small percent of air resistance, as long as that movement is done on Earth.

-It has variable acceleration: In projectile motion acceleration is constant (gravity acceleration) .

-It is unaffected by gravity: The only force that acts on the projectile is due gravity.

5 0

2 years ago

Read 2 more answers

Equipotential surfaces a) make an angle of 45 degrees with the electric field. b) are parallel to the electric field. c) are per

Schach [20]

Answer:

Option c) are perpendicular to the electric field

Explanation:

Equipotential surfaces are perpendicular to the electric field. the electric field lines are projected outwards from the equipotential surface, i.e., the lines of the electric field are at 90 $^{\circ}$ to the equipotential surface.

Equipotential surface are those surfaces that have the same potential at any point on the surface. Thus the potential difference at any point on the surface is zero due to same potential.

Any charge particle on this surface will move in a perpendicular direction to the Coulombian force. No work is done by the force on a particle moving on an equipotential surface.

7 0

3 years ago

In a compound, the atom does or does not take on a new set of properties

disa [49]

It does take on new set of proerties

7 0

2 years ago

Now in "real life," this automobile is cruising at 20.5 m/s (equal to 73.8 km/hr) when it is about to hit a pedestrian stuck in

algol13

Answer:

He needs 1.53 seconds to stop the car.

Explanation:

Let the mass of the car is 1500 kg

Speed of the car, v = 20.5 m/s

He will not push the car with a force greater than, $F=2\times 10^4\ N$

The impulse delivered to the object is given by the change in momentum as :

$F\times t=mv\\\\t=\dfrac{mv}{F}\\\\t=\dfrac{1500\times 20.5}{2\times 10^4}\\\\t=1.53\ s$

So, he needs 1.53 seconds to stop the car. Hence, this is the required solution.

5 0

3 years ago

A body at rest will remain at rest unless acted on by a(an) _____.