PEQ1

An object thrown at an angle possesses both x and y initial velocity

• True

• False

• false, only x component

• false, only y component

At the max height, both horizontal and vertical components of velocity is zero

• False, only vertical

• False, only horizontal

• True

• Incomplete data

When the object is thrown horizontally, its horizontal velocity is non-zero

• false, zero

• true, vi cos(theta)

• true, vi sin (theta)

• true, gt

In projectile motion, the horizontal acceleration is non-zero

• True, equal to g

• True, (vf-vi)t

• false, zero

• false, projectile has no horizontal component

The vertical acceleration at max height is zero

• True

• False, g

• False, increasing or decreasing value

• sometimes

Which is incorrect about an object thrown upward ?

• it has no initial velocity

• contains constant acceleration

• its final velocity is zero

• the time of fall is the same with time of flight.

At the same height, an object drops will reach the ground first than object thrown horizontally.

• True

• False, object thrown horizontally

• False, the same time

The magnitude of vertical velocity is _____ when its direction similar to the direction of gravity

• increases

• decrease

• zero

• constant

The final vertical velocity is equivalent to

• 2dy/g

• vi sin(theta) + gt

• vi sin(theta)

• gt

The formula for time when object thrown horizontally is

• t= sqrt (2dy/g)

• t = vi sin(theta)

• t = vi cos(theta)/

• 2gdy