I'm having problems of calculating the acceleration and velocity of a cart travelling down an inclined plane. I also need help calculating Sin theta. I've used 2 formulas to try calculating the acceleration and i get different answers. the first formula is a=2s/t2(squared), the 2nd formula was a=gsintheta. As for the angle sintheta i used the height of the plane/length of the board but i get ridiculous answers.(adsbygoogle = window.adsbygoogle || []).push({});

Length of inclined plane: 150.5cm

Point at which the cart is released: 115cm

Weight of cart: 784.30g

1st, height of the plane was 10 cm, avg time was 2.573 a=? v=?

2nd, height 20cm, avg time 1.483 a=? v=?

3rd, height 30cm, avg time 1.1783 a=? v=?

4th, height 40cm, avg time 0.973 a=? v=?

5th, height 50cm, avg time 0.8716 a=? v=?

6th, height 60cm, avg time 0.783 a=? v=?

7th, height 70cm, avg time 0.723 a=? v=?

8th, height 100cm, avg time 0.58 a=? v=?

Would appreciate it very much if someone could help me. I've been stuck at this for a week now and its getting really frustrating. Thank you!

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Acceleration and velocity of cart travelling down an inclined plane.

**Physics Forums | Science Articles, Homework Help, Discussion**