All categories

3 years ago

State Newton’s first law of motion in your own words.

Physics

2 answers:

Inessa [10]3 years ago

7 0

Answer:

An object in motion will stay in motion until an outside force is acted upon it. An object at rest will stay at rest until an outside force acts upon it.

Explanation:

blondinia [14]3 years ago

6 0

Answer:

An object in motion will stay in motion until an outside force is acted upon it.An object at rest will stay at rest until an outside force acts upon it.

Explanation:

You might be interested in

Give 2 examples of mountain ranges in the world that have been caused by folding

butalik [34]

The Himalayas, Andes, and the Alps are some

5 0

3 years ago

A boy kicks a football with an initial velocity of 28.0 m/s at an angle of 30.0o above the horizontal. what is the highest eleva

sladkih [1.3K]

As the boy kicks the football with an angle, due to the effect of the gravitational force, the ball would follow a projectile path which is parabolic in nature. From this idea, we can derive equations pertaining to the maximum height that the ball would reach. At the maximum height of the ball, the velocity of the ball would be equal to zero. From the equations for projectile motion, we would obtain the equation as follows:

Maximum height = v0^2 sin^2 (theta) / 2g
Maximum height = (28.0 m / s )^2 sin^2 (30.0) / 2(9.8 m / s^2)
Maximum height = 10 m

The maximum height that the ball would reach would be 10 m.

7 0

3 years ago

A race-car drives around a circular track of radius RRR. The race-car speeds around its first lap at linear speed v_iv i v, st

Bond [772]

Answer and Explanation: Centripetal Acceleration is the change in velocity caused by a circular motion. It is calculated as:

$a_{c}=\frac{v^{2}}{r}$

v is linear speed

r is radius of the curve the object in traveling along

For its first lap:

$a_{c}_{1}=\frac{v_{i}^{2}}{R}$

After a while:

$a_{c}_{2}=\frac{(4v_{i})^{2}}{R}$

$a_{c}_{2}=\frac{16v_{i}^{2}}{R}$

Comparing accelerations:

$\frac{a_{c}_{2}}{a_{c}_{1}}=\frac{16.v_{i}^{2}}{R}.\frac{R}{v_{i}^{2}}$

$\frac{a_{c}_{2}}{a_{c}_{1}}=16$

$a_{c}_{2}=16a_{c}_{1}$

With linear speed 4 times faster, centripetal acceleration is 16 times greater.

4 0

3 years ago

2019kL is the same as__dL?

Gwar [14]

If kl is kiloliters and dl is deciliters, 2019kl=2.019e+7

4 0

3 years ago

A car with mass 2.0×10 3 kg traveling east at a speed of 20 m/s collides at an intersection with a2.5×10 3 kg van traveling nort

lys-0071 [83]

When analyzing inelastic collisions, we need to consider the law of conservation of momentum, which states that the total momentum, p, of the closed system is a constant. In the case of inelastic collisions, the momentum of the combined mass after the collision is equal to the sum of the momentum of each of the initial masses.

p1+p2+...=pf

In our case we only have two masses, which makes our problem fairly simple. Lets plug in the formula for momentum; p=mv.

m1v1+m2v2=(m1+m2)vf

To find the velocity of the combined mass we simply rearrange the terms.

vf=m1v1+m2v2m1+m2

Plug in the values given in the problem.

vf=(3.0kg)(1.4m/s)+(2.0kg)(0m/s)03.0kg+2.0kg

vf=.84m/s

7 0

3 years ago