Kinematics simultaneous equations| Question 3b | IEB Supplementary Exam 2019 | Mlungisi Nkosi

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Sir uhm...do we use Fg parallel when we calculating the mass of an object on an incline that is stationary.


E.g an elephant is inside the crate of mas 800kg that is held stationary on an incline.

Question be like caltulate the mass of an elephant in the crate.

[muhammadirfaanamod]

Also why did you not say -15m/s for car if it’s travelling in the opposite direction?

[princesebothoma]

Morning sir, so when two cars are travelling in opposite directions it's okay to give their velocities same signs? Because i used different signs and got time to be 240s

[muhammadirfaanamod]

Why for Time(d) for car B do you subtract and not add time of 120s if it takes longer for the car to reach point P?

[NgwaketsiMothupi-yvfm]

Sir are we not going to plus the 2 minute of car B

[mbongisenimbuyane]

WHAY CANT WE SAY T+120 FOR CAR B SINCE IT FOLLOWED AFTER

[gnmplays]

Sir can I ask why is a =0 isn't it equal to 9.8