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Difficulty Secondary School High school/other ★ Basic Easy ★★ Demanding Basic ★★★ Demanding ★★★★ Difficult ★★★★★ Very difficult
In what direction is the elevator going? Also specify the maximum acceleration of the elevator at the beginning and in the end.
Answer: The elevator's maximum acceleration is at the beginning $0,39\ m/s^2$ and in the end $-0,47\ m/s^2$
Difficulty Secondary School High school/other ★ Basic Easy ★★ Demanding Basic ★★★ Demanding ★★★★ Difficult ★★★★★ Very difficult
In what direction is the elevator going? Also specify the maximum acceleration of the elevator at the beginning and in the end.
Answer: The elevator's maximum acceleration is at the beginning $0{,}39\ m/s^2$ and in the end $-0{,}39\ m/s^2$
Difficulty Secondary School High school/other ★ Basic Easy ★★ Demanding Basic ★★★ Demanding ★★★★ Difficult ★★★★★ Very difficult
How much tension is there in the wire when the body is moving?
Answer: 1,8 N
Difficulty Secondary School High school/other ★ Basic Easy ★★ Demanding Basic ★★★ Demanding ★★★★ Difficult ★★★★★ Very difficult
Determine the mass of the yellow metal weight.
Answer: 77 g
Difficulty Secondary School High school/other ★ Basic Easy ★★ Demanding Basic ★★★ Demanding ★★★★ Difficult ★★★★★ Very difficult
What is the average force exerted to the puck by the stick?
Tip: The impulse caused by the force is equal to the change in impulse-momentum.
Answer: 160 N
Difficulty Secondary School High school/other ★ Basic Easy ★★ Demanding Basic ★★★ Demanding ★★★★ Difficult ★★★★★ Very difficult
What is the average force exerted to the bandy ball by the stick?
Tip: The impulse caused by force is equal to the change in impulse-momentum.
Answer: 190 N
Difficulty Secondary School High school/other ★ Basic Easy ★★ Demanding Basic ★★★ Demanding ★★★★ Difficult ★★★★★ Very difficult
What is the average force exerted to the tennis ball by the racket?
Tip: The impulse caused by force is equal to the change in impulse-momentum.
Answer: 440 N
Difficulty Secondary School High school/other ★ Basic Easy ★★ Demanding Basic ★★★ Demanding ★★★★ Difficult ★★★★★ Very difficult
Define the average force on the ball during the acceleration. a) By means of the basic law mechanics: ∑ F̅ = ma̅. b) Through the power impulse: F∆t = m∆v
Answer: 0,08 N