00 Sprint 251 PM a sessionmasteringphysicscom Item 2 Masteri

00 Sprint 2:51 PM a session.masteringphysics.com Item 2 MasteringPhysics 8496. SICS Item 2 A ball is fired from a cannon at point I and follows the trajectory shown in E:O Tap image to zoom Air resistance may be neglected. Five possible vectors are lso shown in the figure; the letter E represents th vector.

Solution

(a)

the velocity is directed along the tangent to the trajectory at point 2. So, the best representation for the velocity of the object at point 2 is D.

(b)

the acceleration is directed in downward since there is gravitational effect on the object in downward direction. So, the at point 2 acceleration best line is A.

(c)

the vertical component of the velocity is zero at point 3. But the the x-component of the velcoity points along the tangent at point 3, thius means that the velocity at point 3 is pointed o the right straight line, that is line C.

(d)

acceleratio at point 3 is also pointed in downward, so it represented by line A.