- #1
Tensaiga
- 43
- 0
Ok here's my question:
An exceptional vertical jump from rest would raise a person 0.80m off the ground. to do this, what constant force would a 70kg person have to exert against the ground? assuming the person lowers himself by 0.2m prior to jumping and remains ina standing position while in the air.
ANS-the correct answer says in our book is 3.4 * 10^3 N. I didn't get that, i got something like 1300N.
the initial velocity i found was 3.43m/s, and i know it must over come the weight (gravtional field strength), and THAT's all i know...
Thanks
An exceptional vertical jump from rest would raise a person 0.80m off the ground. to do this, what constant force would a 70kg person have to exert against the ground? assuming the person lowers himself by 0.2m prior to jumping and remains ina standing position while in the air.
ANS-the correct answer says in our book is 3.4 * 10^3 N. I didn't get that, i got something like 1300N.
the initial velocity i found was 3.43m/s, and i know it must over come the weight (gravtional field strength), and THAT's all i know...
Thanks