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Grade 4scienceStudents use evidence to explain how an object's speed affects energy during a collision.

Energy in Collisions

Practice energy and collisions with 10 problems, an answer key, and a printable PDF for Grade 4.

10 problems · Standards: 4-PS3-1, 4-PS3-3 · Difficulty: hard

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✅ Answer key included · ✅ Free for home & classroom use

Highlights

Grade: Grade 4
Subject: science
Topic: Students use evidence to explain how an object's speed affects energy during a collision.
Pages: 3 · worksheet + answer key
Answer key: ✅ Included
Class time: about 15 min

1. A cart rolls down a ramp and hits a block of wood. If the cart moves faster, will it push the block farther or a shorter distance?
2. Experiment A: A cart released from 20 cm high pushes a block 15 cm. Experiment B: A cart released from 40 cm high pushes the same block 30 cm. Which cart had more speed at the bottom of the ramp?
3. A toy car moving at 2 meters per second hits a cup and knocks it over. A toy car moving at 4 meters per second hits the same cup. What is different about the collision with the faster car?
4. In three tests, a cart released from different heights pushed a wooden cube these distances: Test 1 (10 cm high): 8 cm pushed. Test 2 (20 cm high): 16 cm pushed. Test 3 (30 cm high): 24 cm pushed. What pattern do you observe between starting height and distance pushed?
5. A marble rolls down a ramp and hits a stack of five plastic chips. When released from 15 cm high, it knocks over 2 chips. When released from 30 cm high, it knocks over 4 chips. Predict how many chips will be knocked over if released from 45 cm high.
6. Two identical carts collide with a barrier. Cart A is moving at 1 meter per second and dents the barrier 2 millimeters. Cart B is moving at 3 meters per second. Using evidence about speed and collision energy, explain why Cart B will cause more damage than Cart A.

Showing 6 of 10 problems. The free PDF includes every problem plus the full answer key.

The free PDF includes all 3 pages — every problem plus the full answer key.

10 problems across 3 pages (worksheet + answer key)
Answer key included — every answer, ready to check
Standards: 4-PS3-1, 4-PS3-3
Skill: Students use evidence to explain how an object's speed affects energy during a collision.
Suggested use: classwork, homework, or sub plans

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