Recent content by nicky670

Make the s in the equation, 3.8

On top of ramp B, so i take 3.8?

Thank you haruspex :)

okay so i wanted to find the time taken for the car to travel from start point to end point. And if i substitute the into the equation, will be 7.2 = 25sin30t - 0.5(9.8)t^2. But the t that i got is wrong from the answer, and so if i want to find the x distance when i substitute the t inside, i...

tension.

Oh, means to say when its extended it will have a tension pulling it back and if compressed there will be a force pushing the block forward?

When the spring extends, wouldn't it exert a force in the same direction as the tension force?

Do i use the equation above mentioned to solve it? If i do, am i correct to say that Vx = 90/3.6 cos 30 and Vy = 90/3.6 sin30?

But wouldn't the spring force push the block forward?

Fsp = 90 x 0.12 = 10.8 Ffriction = Magcos(titre) x 0.30 I got the answer 2.09ms2 when the correct answer is 1.11ms2. What am i doing wrong here?

So i use rho = m/v formula to find the mass and then multiply by g=9.8 to get the weight?

The weight of the volume of water displaced

it is the volume of water displaced by the rock that will get you the buoyant force right? It will be the volume of water displaced by the rock right? For buoyant force

Thank you so much guys!

Yes i have.