Two baby buggies are moving toward a head-on collision on level ground. the first buggy has a mass of 12 kg and is moving at a speed of 3 m/s. the second buggy has a mass of 15 kg and is moving at a speed of 5 m/s. the buggies are each equipped with rugged rubber bumpers that insure the collision is perfectly elastic.

which of the following is closest to the distance between the buggies 3 seconds after the collision? (you may neglect friction.)

10 m
15 m
20 m
25 m
30 m

The distance between the buggies is 25 m.

(d) is correct option.

Explanation:

Given that,

Mass of first buggy = 12 kg

Speed of first buggy = 3 m/s

Mass of second buggy = 15 kg

Speed of second buggy = 5 m/s

Time = 3 sec

We need to calculate the final velocity of first buggy

Using formula of velocity

Put the value into the formula

We need to calculate the final velocity of second buggy

Using formula of velocity

Put the value into the formula

The velocity separation will be 2 m/s.

We need to calculate the distance for first buggy

Using formula of distance

Put the value into the formula

We need to calculate the distance for second buggy

Using formula of distance

Put the value into the formula

Total distance between both buggies

Put the value into the formula

Hence, The distance between the buggies is 25 m.

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.