Determine which of the following moving objects obey the equations of projectile motion developed in this topic. A ball is thrown in an arbitrary direction. A jet airplane crosses the sky with its engines thrusting the plane forward. A rocket leaves the launch pad. A rocket moves through the sky after its engines have failed. A stone is thrown under water.

A ball is thrown in an arbitrary direction and a rocket moves through the sky after its engines have failed.

Explanation:

The concept applied is that of projectile motion which is the free fall for both then horizontal and vertical component of a constant velocity. it is also the motion of an object thrown under the influence of acceleration due to gravity.

The correct option are as follows ; A ball is thrown in an arbitrary direction and a rocket moves through the sky after its engines have failed.

For the first case ; A ball is thrown in an arbitrary direction ; after the ball must have been thrown, the projectile further moves in a curved path.

for the second case ; A rocket moves through the sky after its engines have failed ; the rocket also moves in a curved path under the influence of the acceleration due to gravity.

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50

which three statements are true about all alloys?