I am so lost on these two problems, explanations would be greatly appreciated fo

Question

I am so lost on these two problems, explanations would be greatly appreciated for both of them! Thank you! I will rate!!

P5.20.2 You push a penguin across the snow at constant speed with a P5.20.2 You push a penguin across the snow at constant speed with a horizontal force of 42 N. The coefficient of kinetic friction between the penguin's feet and the snow is 0.100. What is the penguin's mass? (5.00) (2/5 submissions used) kg Save P5.20.2Submit P5.20.2 Section 25: Sample problem: moving down a frictionless plane P5.25.1 (5.00) of A snowboarder slides down an icy slope, regarded as a frictionless plane. The slope makes an angle of 30° with the horizontal. What is the magnitude of the snowboarder's acceleration? (0/5 submissions used) m/s2 Save P5.25.Submit P5.25.1

Explanation / Answer

20.2) the net force acting   

F - uk N = 0

F = uk N = uk*m*g

m = F/uk*g = 42/( 0.1*9.8 )

m = 42.857 kg

25.1) acceleration a = g sin theta

a = 9.8 sin 30 degrees

a = 4.9 m/s^2

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.