A 20-kg crate is sitting on a frictionless ice rink. A child standing at the side of the ice rink uses a slingshot to launch a 1. 5-kg beanbag at the crate. Assume that the beanbag strikes the crate horizontally in the +x direction with a speed of 10 m/s. The beanbag bounces straight back in the -x direction with a speed of 6 m/s. Using conservation of momentum, calculate the speed of the crate after the beanbag hits it.

All of the following are examples of service-learning opportunities except: a. donating time to senior citizen war veterans and writing a report about the experience for your u.s. history class. b. getting a part-time job at a habitat restoration center. c. reading to second-grade students as part of your assigned reading time for your english class. d. planting trees in your community and then discussing global warming in your science class.

You can reduce glare in snowy weatuer by?

How are 3-d printers useful in studying evolution? a. to color the fossils of organisms b. to create clones of extinct organisms c. to create replicas of fossils d. to prepare paper cutouts of organisms e. to study the composition of fossils